diff --git a/Cargo.lock b/Cargo.lock
index e426745..abf0d2d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -160,7 +160,7 @@ dependencies = [
 
 [[package]]
 name = "dragonfly-api"
-version = "2.0.115"
+version = "2.0.116"
 dependencies = [
  "prost 0.11.9",
  "prost-types 0.12.6",
diff --git a/Cargo.toml b/Cargo.toml
index a8a5588..a2c6737 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "dragonfly-api"
-version = "2.0.115"
+version = "2.0.116"
 authors = ["Gaius <gaius.qi@gmail.com>"]
 edition = "2021"
 license = "Apache-2.0"
diff --git a/pkg/apis/common/v2/common.pb.go b/pkg/apis/common/v2/common.pb.go
index 4f1d4c6..67eb11f 100644
--- a/pkg/apis/common/v2/common.pb.go
+++ b/pkg/apis/common/v2/common.pb.go
@@ -429,6 +429,120 @@ func (x *Peer) GetUpdatedAt() *timestamppb.Timestamp {
 	return nil
 }
 
+// CachePeer metadata.
+type CachePeer struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Peer id.
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// Persistent represents whether the cache peer is persistent.
+	// If the cache peer is persistent, the cache peer will
+	// not be deleted when dfdamon runs garbage collection.
+	Persistent bool `protobuf:"varint,2,opt,name=persistent,proto3" json:"persistent,omitempty"`
+	// Peer downloads costs time.
+	Cost *durationpb.Duration `protobuf:"bytes,3,opt,name=cost,proto3" json:"cost,omitempty"`
+	// Peer state.
+	State string `protobuf:"bytes,4,opt,name=state,proto3" json:"state,omitempty"`
+	// Task info.
+	Task *CacheTask `protobuf:"bytes,5,opt,name=task,proto3" json:"task,omitempty"`
+	// Host info.
+	Host *Host `protobuf:"bytes,6,opt,name=host,proto3" json:"host,omitempty"`
+	// Peer create time.
+	CreatedAt *timestamppb.Timestamp `protobuf:"bytes,7,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
+	// Peer update time.
+	UpdatedAt *timestamppb.Timestamp `protobuf:"bytes,8,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
+}
+
+func (x *CachePeer) Reset() {
+	*x = CachePeer{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CachePeer) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CachePeer) ProtoMessage() {}
+
+func (x *CachePeer) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CachePeer.ProtoReflect.Descriptor instead.
+func (*CachePeer) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *CachePeer) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *CachePeer) GetPersistent() bool {
+	if x != nil {
+		return x.Persistent
+	}
+	return false
+}
+
+func (x *CachePeer) GetCost() *durationpb.Duration {
+	if x != nil {
+		return x.Cost
+	}
+	return nil
+}
+
+func (x *CachePeer) GetState() string {
+	if x != nil {
+		return x.State
+	}
+	return ""
+}
+
+func (x *CachePeer) GetTask() *CacheTask {
+	if x != nil {
+		return x.Task
+	}
+	return nil
+}
+
+func (x *CachePeer) GetHost() *Host {
+	if x != nil {
+		return x.Host
+	}
+	return nil
+}
+
+func (x *CachePeer) GetCreatedAt() *timestamppb.Timestamp {
+	if x != nil {
+		return x.CreatedAt
+	}
+	return nil
+}
+
+func (x *CachePeer) GetUpdatedAt() *timestamppb.Timestamp {
+	if x != nil {
+		return x.UpdatedAt
+	}
+	return nil
+}
+
 // Task metadata.
 type Task struct {
 	state         protoimpl.MessageState
@@ -441,7 +555,7 @@ type Task struct {
 	Type TaskType `protobuf:"varint,2,opt,name=type,proto3,enum=common.v2.TaskType" json:"type,omitempty"`
 	// Download url.
 	Url string `protobuf:"bytes,3,opt,name=url,proto3" json:"url,omitempty"`
-	// Digest of the task digest, for example md5:xxx or sha256:yyy.
+	// Digest of the task digest, for example blake3:xxx or sha256:yyy.
 	Digest *string `protobuf:"bytes,4,opt,name=digest,proto3,oneof" json:"digest,omitempty"`
 	// URL tag identifies different task for same url.
 	Tag *string `protobuf:"bytes,5,opt,name=tag,proto3,oneof" json:"tag,omitempty"`
@@ -456,7 +570,7 @@ type Task struct {
 	// Task request headers.
 	RequestHeader map[string]string `protobuf:"bytes,8,rep,name=request_header,json=requestHeader,proto3" json:"request_header,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// Task piece length.
-	PieceLength uint32 `protobuf:"varint,9,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
+	PieceLength uint64 `protobuf:"varint,9,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
 	// Task content length.
 	ContentLength uint64 `protobuf:"varint,10,opt,name=content_length,json=contentLength,proto3" json:"content_length,omitempty"`
 	// Task piece count.
@@ -480,7 +594,7 @@ type Task struct {
 func (x *Task) Reset() {
 	*x = Task{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[1]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -493,7 +607,7 @@ func (x *Task) String() string {
 func (*Task) ProtoMessage() {}
 
 func (x *Task) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[1]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -506,7 +620,7 @@ func (x *Task) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Task.ProtoReflect.Descriptor instead.
 func (*Task) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{1}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *Task) GetId() string {
@@ -565,7 +679,7 @@ func (x *Task) GetRequestHeader() map[string]string {
 	return nil
 }
 
-func (x *Task) GetPieceLength() uint32 {
+func (x *Task) GetPieceLength() uint64 {
 	if x != nil {
 		return x.PieceLength
 	}
@@ -635,6 +749,154 @@ func (x *Task) GetUpdatedAt() *timestamppb.Timestamp {
 	return nil
 }
 
+// CacheTask metadata.
+type CacheTask struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Task id.
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// Replica count of the persistent cache task.
+	PersistentReplicaCount uint64 `protobuf:"varint,2,opt,name=persistent_replica_count,json=persistentReplicaCount,proto3" json:"persistent_replica_count,omitempty"`
+	// Replica count of the cache task.
+	ReplicaCount uint64 `protobuf:"varint,3,opt,name=replica_count,json=replicaCount,proto3" json:"replica_count,omitempty"`
+	// Digest of the task digest, for example blake3:xxx or sha256:yyy.
+	Digest string `protobuf:"bytes,4,opt,name=digest,proto3" json:"digest,omitempty"`
+	// Tag is used to distinguish different cache tasks.
+	Tag *string `protobuf:"bytes,5,opt,name=tag,proto3,oneof" json:"tag,omitempty"`
+	// Application of task.
+	Application *string `protobuf:"bytes,6,opt,name=application,proto3,oneof" json:"application,omitempty"`
+	// Task piece length.
+	PieceLength uint64 `protobuf:"varint,7,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
+	// Task content length.
+	ContentLength uint64 `protobuf:"varint,8,opt,name=content_length,json=contentLength,proto3" json:"content_length,omitempty"`
+	// Task piece count.
+	PieceCount uint32 `protobuf:"varint,9,opt,name=piece_count,json=pieceCount,proto3" json:"piece_count,omitempty"`
+	// Task state.
+	State string `protobuf:"bytes,10,opt,name=state,proto3" json:"state,omitempty"`
+	// Task create time.
+	CreatedAt *timestamppb.Timestamp `protobuf:"bytes,11,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
+	// Task update time.
+	UpdatedAt *timestamppb.Timestamp `protobuf:"bytes,12,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
+}
+
+func (x *CacheTask) Reset() {
+	*x = CacheTask{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CacheTask) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CacheTask) ProtoMessage() {}
+
+func (x *CacheTask) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CacheTask.ProtoReflect.Descriptor instead.
+func (*CacheTask) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *CacheTask) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *CacheTask) GetPersistentReplicaCount() uint64 {
+	if x != nil {
+		return x.PersistentReplicaCount
+	}
+	return 0
+}
+
+func (x *CacheTask) GetReplicaCount() uint64 {
+	if x != nil {
+		return x.ReplicaCount
+	}
+	return 0
+}
+
+func (x *CacheTask) GetDigest() string {
+	if x != nil {
+		return x.Digest
+	}
+	return ""
+}
+
+func (x *CacheTask) GetTag() string {
+	if x != nil && x.Tag != nil {
+		return *x.Tag
+	}
+	return ""
+}
+
+func (x *CacheTask) GetApplication() string {
+	if x != nil && x.Application != nil {
+		return *x.Application
+	}
+	return ""
+}
+
+func (x *CacheTask) GetPieceLength() uint64 {
+	if x != nil {
+		return x.PieceLength
+	}
+	return 0
+}
+
+func (x *CacheTask) GetContentLength() uint64 {
+	if x != nil {
+		return x.ContentLength
+	}
+	return 0
+}
+
+func (x *CacheTask) GetPieceCount() uint32 {
+	if x != nil {
+		return x.PieceCount
+	}
+	return 0
+}
+
+func (x *CacheTask) GetState() string {
+	if x != nil {
+		return x.State
+	}
+	return ""
+}
+
+func (x *CacheTask) GetCreatedAt() *timestamppb.Timestamp {
+	if x != nil {
+		return x.CreatedAt
+	}
+	return nil
+}
+
+func (x *CacheTask) GetUpdatedAt() *timestamppb.Timestamp {
+	if x != nil {
+		return x.UpdatedAt
+	}
+	return nil
+}
+
 // Host metadata.
 type Host struct {
 	state         protoimpl.MessageState
@@ -680,7 +942,7 @@ type Host struct {
 func (x *Host) Reset() {
 	*x = Host{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[2]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -693,7 +955,7 @@ func (x *Host) String() string {
 func (*Host) ProtoMessage() {}
 
 func (x *Host) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[2]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -706,7 +968,7 @@ func (x *Host) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Host.ProtoReflect.Descriptor instead.
 func (*Host) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{2}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *Host) GetId() string {
@@ -849,7 +1111,7 @@ type CPU struct {
 func (x *CPU) Reset() {
 	*x = CPU{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[3]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -862,7 +1124,7 @@ func (x *CPU) String() string {
 func (*CPU) ProtoMessage() {}
 
 func (x *CPU) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[3]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -875,7 +1137,7 @@ func (x *CPU) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CPU.ProtoReflect.Descriptor instead.
 func (*CPU) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{3}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *CPU) GetLogicalCount() uint32 {
@@ -945,7 +1207,7 @@ type CPUTimes struct {
 func (x *CPUTimes) Reset() {
 	*x = CPUTimes{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[4]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -958,7 +1220,7 @@ func (x *CPUTimes) String() string {
 func (*CPUTimes) ProtoMessage() {}
 
 func (x *CPUTimes) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[4]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -971,7 +1233,7 @@ func (x *CPUTimes) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CPUTimes.ProtoReflect.Descriptor instead.
 func (*CPUTimes) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{4}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *CPUTimes) GetUser() float64 {
@@ -1067,7 +1329,7 @@ type Memory struct {
 func (x *Memory) Reset() {
 	*x = Memory{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[5]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1080,7 +1342,7 @@ func (x *Memory) String() string {
 func (*Memory) ProtoMessage() {}
 
 func (x *Memory) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[5]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1093,7 +1355,7 @@ func (x *Memory) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Memory.ProtoReflect.Descriptor instead.
 func (*Memory) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{5}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *Memory) GetTotal() uint64 {
@@ -1157,7 +1419,7 @@ type Network struct {
 func (x *Network) Reset() {
 	*x = Network{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[6]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1170,7 +1432,7 @@ func (x *Network) String() string {
 func (*Network) ProtoMessage() {}
 
 func (x *Network) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[6]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1183,7 +1445,7 @@ func (x *Network) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Network.ProtoReflect.Descriptor instead.
 func (*Network) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{6}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *Network) GetTcpConnectionCount() uint32 {
@@ -1241,7 +1503,7 @@ type Disk struct {
 func (x *Disk) Reset() {
 	*x = Disk{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[7]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1254,7 +1516,7 @@ func (x *Disk) String() string {
 func (*Disk) ProtoMessage() {}
 
 func (x *Disk) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[7]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1267,7 +1529,7 @@ func (x *Disk) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Disk.ProtoReflect.Descriptor instead.
 func (*Disk) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{7}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *Disk) GetTotal() uint64 {
@@ -1347,7 +1609,7 @@ type Build struct {
 func (x *Build) Reset() {
 	*x = Build{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[8]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1360,7 +1622,7 @@ func (x *Build) String() string {
 func (*Build) ProtoMessage() {}
 
 func (x *Build) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[8]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1373,7 +1635,7 @@ func (x *Build) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Build.ProtoReflect.Descriptor instead.
 func (*Build) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{8}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *Build) GetGitVersion() string {
@@ -1411,15 +1673,15 @@ func (x *Build) GetPlatform() string {
 	return ""
 }
 
-// Download information.
-type Download struct {
+// DownloadTask information.
+type DownloadTask struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
 	// Download url.
 	Url string `protobuf:"bytes,1,opt,name=url,proto3" json:"url,omitempty"`
-	// Digest of the task digest, for example md5:xxx or sha256:yyy.
+	// Digest of the task digest, for example blake3:xxx or sha256:yyy.
 	Digest *string `protobuf:"bytes,2,opt,name=digest,proto3,oneof" json:"digest,omitempty"`
 	// Range is url range of request. If protocol is http, range
 	// will set in request header. If protocol is others, range
@@ -1442,7 +1704,7 @@ type Download struct {
 	// Task request headers.
 	RequestHeader map[string]string `protobuf:"bytes,9,rep,name=request_header,json=requestHeader,proto3" json:"request_header,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// Task piece length.
-	PieceLength uint32 `protobuf:"varint,10,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
+	PieceLength uint64 `protobuf:"varint,10,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
 	// File path to be exported.
 	OutputPath *string `protobuf:"bytes,11,opt,name=output_path,json=outputPath,proto3,oneof" json:"output_path,omitempty"`
 	// Download timeout.
@@ -1457,23 +1719,23 @@ type Download struct {
 	Prefetch bool `protobuf:"varint,16,opt,name=prefetch,proto3" json:"prefetch,omitempty"`
 }
 
-func (x *Download) Reset() {
-	*x = Download{}
+func (x *DownloadTask) Reset() {
+	*x = DownloadTask{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[9]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
 }
 
-func (x *Download) String() string {
+func (x *DownloadTask) String() string {
 	return protoimpl.X.MessageStringOf(x)
 }
 
-func (*Download) ProtoMessage() {}
+func (*DownloadTask) ProtoMessage() {}
 
-func (x *Download) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[9]
+func (x *DownloadTask) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1484,117 +1746,117 @@ func (x *Download) ProtoReflect() protoreflect.Message {
 	return mi.MessageOf(x)
 }
 
-// Deprecated: Use Download.ProtoReflect.Descriptor instead.
-func (*Download) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{9}
+// Deprecated: Use DownloadTask.ProtoReflect.Descriptor instead.
+func (*DownloadTask) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{11}
 }
 
-func (x *Download) GetUrl() string {
+func (x *DownloadTask) GetUrl() string {
 	if x != nil {
 		return x.Url
 	}
 	return ""
 }
 
-func (x *Download) GetDigest() string {
+func (x *DownloadTask) GetDigest() string {
 	if x != nil && x.Digest != nil {
 		return *x.Digest
 	}
 	return ""
 }
 
-func (x *Download) GetRange() *Range {
+func (x *DownloadTask) GetRange() *Range {
 	if x != nil {
 		return x.Range
 	}
 	return nil
 }
 
-func (x *Download) GetType() TaskType {
+func (x *DownloadTask) GetType() TaskType {
 	if x != nil {
 		return x.Type
 	}
 	return TaskType_DFDAEMON
 }
 
-func (x *Download) GetTag() string {
+func (x *DownloadTask) GetTag() string {
 	if x != nil && x.Tag != nil {
 		return *x.Tag
 	}
 	return ""
 }
 
-func (x *Download) GetApplication() string {
+func (x *DownloadTask) GetApplication() string {
 	if x != nil && x.Application != nil {
 		return *x.Application
 	}
 	return ""
 }
 
-func (x *Download) GetPriority() Priority {
+func (x *DownloadTask) GetPriority() Priority {
 	if x != nil {
 		return x.Priority
 	}
 	return Priority_LEVEL0
 }
 
-func (x *Download) GetFilteredQueryParams() []string {
+func (x *DownloadTask) GetFilteredQueryParams() []string {
 	if x != nil {
 		return x.FilteredQueryParams
 	}
 	return nil
 }
 
-func (x *Download) GetRequestHeader() map[string]string {
+func (x *DownloadTask) GetRequestHeader() map[string]string {
 	if x != nil {
 		return x.RequestHeader
 	}
 	return nil
 }
 
-func (x *Download) GetPieceLength() uint32 {
+func (x *DownloadTask) GetPieceLength() uint64 {
 	if x != nil {
 		return x.PieceLength
 	}
 	return 0
 }
 
-func (x *Download) GetOutputPath() string {
+func (x *DownloadTask) GetOutputPath() string {
 	if x != nil && x.OutputPath != nil {
 		return *x.OutputPath
 	}
 	return ""
 }
 
-func (x *Download) GetTimeout() *durationpb.Duration {
+func (x *DownloadTask) GetTimeout() *durationpb.Duration {
 	if x != nil {
 		return x.Timeout
 	}
 	return nil
 }
 
-func (x *Download) GetDisableBackToSource() bool {
+func (x *DownloadTask) GetDisableBackToSource() bool {
 	if x != nil {
 		return x.DisableBackToSource
 	}
 	return false
 }
 
-func (x *Download) GetNeedBackToSource() bool {
+func (x *DownloadTask) GetNeedBackToSource() bool {
 	if x != nil {
 		return x.NeedBackToSource
 	}
 	return false
 }
 
-func (x *Download) GetCertificateChain() [][]byte {
+func (x *DownloadTask) GetCertificateChain() [][]byte {
 	if x != nil {
 		return x.CertificateChain
 	}
 	return nil
 }
 
-func (x *Download) GetPrefetch() bool {
+func (x *DownloadTask) GetPrefetch() bool {
 	if x != nil {
 		return x.Prefetch
 	}
@@ -1616,7 +1878,7 @@ type Range struct {
 func (x *Range) Reset() {
 	*x = Range{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[10]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1629,7 +1891,7 @@ func (x *Range) String() string {
 func (*Range) ProtoMessage() {}
 
 func (x *Range) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[10]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1642,7 +1904,7 @@ func (x *Range) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Range.ProtoReflect.Descriptor instead.
 func (*Range) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{10}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *Range) GetStart() uint64 {
@@ -1673,7 +1935,7 @@ type Piece struct {
 	Offset uint64 `protobuf:"varint,3,opt,name=offset,proto3" json:"offset,omitempty"`
 	// Piece length.
 	Length uint64 `protobuf:"varint,4,opt,name=length,proto3" json:"length,omitempty"`
-	// Digest of the piece data, for example md5:xxx or sha256:yyy.
+	// Digest of the piece data, for example blake3:xxx or sha256:yyy.
 	Digest string `protobuf:"bytes,5,opt,name=digest,proto3" json:"digest,omitempty"`
 	// Piece content.
 	Content []byte `protobuf:"bytes,6,opt,name=content,proto3,oneof" json:"content,omitempty"`
@@ -1688,7 +1950,7 @@ type Piece struct {
 func (x *Piece) Reset() {
 	*x = Piece{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[11]
+		mi := &file_pkg_apis_common_v2_common_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1701,7 +1963,7 @@ func (x *Piece) String() string {
 func (*Piece) ProtoMessage() {}
 
 func (x *Piece) ProtoReflect() protoreflect.Message {
-	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[11]
+	mi := &file_pkg_apis_common_v2_common_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1714,7 +1976,7 @@ func (x *Piece) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Piece.ProtoReflect.Descriptor instead.
 func (*Piece) Descriptor() ([]byte, []int) {
-	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{11}
+	return file_pkg_apis_common_v2_common_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *Piece) GetNumber() uint32 {
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 }
 
 var (
@@ -2175,63 +2504,72 @@ func file_pkg_apis_common_v2_common_proto_rawDescGZIP() []byte {
 }
 
 var file_pkg_apis_common_v2_common_proto_enumTypes = make([]protoimpl.EnumInfo, 4)
-var file_pkg_apis_common_v2_common_proto_msgTypes = make([]protoimpl.MessageInfo, 14)
+var file_pkg_apis_common_v2_common_proto_msgTypes = make([]protoimpl.MessageInfo, 16)
 var file_pkg_apis_common_v2_common_proto_goTypes = []interface{}{
 	(SizeScope)(0),                // 0: common.v2.SizeScope
 	(TaskType)(0),                 // 1: common.v2.TaskType
 	(TrafficType)(0),              // 2: common.v2.TrafficType
 	(Priority)(0),                 // 3: common.v2.Priority
 	(*Peer)(nil),                  // 4: common.v2.Peer
-	(*Task)(nil),                  // 5: common.v2.Task
-	(*Host)(nil),                  // 6: common.v2.Host
-	(*CPU)(nil),                   // 7: common.v2.CPU
-	(*CPUTimes)(nil),              // 8: common.v2.CPUTimes
-	(*Memory)(nil),                // 9: common.v2.Memory
-	(*Network)(nil),               // 10: common.v2.Network
-	(*Disk)(nil),                  // 11: common.v2.Disk
-	(*Build)(nil),                 // 12: common.v2.Build
-	(*Download)(nil),              // 13: common.v2.Download
-	(*Range)(nil),                 // 14: common.v2.Range
-	(*Piece)(nil),                 // 15: common.v2.Piece
-	nil,                           // 16: common.v2.Task.RequestHeaderEntry
-	nil,                           // 17: common.v2.Download.RequestHeaderEntry
-	(*durationpb.Duration)(nil),   // 18: google.protobuf.Duration
-	(*timestamppb.Timestamp)(nil), // 19: google.protobuf.Timestamp
+	(*CachePeer)(nil),             // 5: common.v2.CachePeer
+	(*Task)(nil),                  // 6: common.v2.Task
+	(*CacheTask)(nil),             // 7: common.v2.CacheTask
+	(*Host)(nil),                  // 8: common.v2.Host
+	(*CPU)(nil),                   // 9: common.v2.CPU
+	(*CPUTimes)(nil),              // 10: common.v2.CPUTimes
+	(*Memory)(nil),                // 11: common.v2.Memory
+	(*Network)(nil),               // 12: common.v2.Network
+	(*Disk)(nil),                  // 13: common.v2.Disk
+	(*Build)(nil),                 // 14: common.v2.Build
+	(*DownloadTask)(nil),          // 15: common.v2.DownloadTask
+	(*Range)(nil),                 // 16: common.v2.Range
+	(*Piece)(nil),                 // 17: common.v2.Piece
+	nil,                           // 18: common.v2.Task.RequestHeaderEntry
+	nil,                           // 19: common.v2.DownloadTask.RequestHeaderEntry
+	(*durationpb.Duration)(nil),   // 20: google.protobuf.Duration
+	(*timestamppb.Timestamp)(nil), // 21: google.protobuf.Timestamp
 }
 var file_pkg_apis_common_v2_common_proto_depIdxs = []int32{
-	14, // 0: common.v2.Peer.range:type_name -> common.v2.Range
+	16, // 0: common.v2.Peer.range:type_name -> common.v2.Range
 	3,  // 1: common.v2.Peer.priority:type_name -> common.v2.Priority
-	15, // 2: common.v2.Peer.pieces:type_name -> common.v2.Piece
-	18, // 3: common.v2.Peer.cost:type_name -> google.protobuf.Duration
-	5,  // 4: common.v2.Peer.task:type_name -> common.v2.Task
-	6,  // 5: common.v2.Peer.host:type_name -> common.v2.Host
-	19, // 6: common.v2.Peer.created_at:type_name -> google.protobuf.Timestamp
-	19, // 7: common.v2.Peer.updated_at:type_name -> google.protobuf.Timestamp
-	1,  // 8: common.v2.Task.type:type_name -> common.v2.TaskType
-	16, // 9: common.v2.Task.request_header:type_name -> common.v2.Task.RequestHeaderEntry
-	0,  // 10: common.v2.Task.size_scope:type_name -> common.v2.SizeScope
-	15, // 11: common.v2.Task.pieces:type_name -> common.v2.Piece
-	19, // 12: common.v2.Task.created_at:type_name -> google.protobuf.Timestamp
-	19, // 13: common.v2.Task.updated_at:type_name -> google.protobuf.Timestamp
-	7,  // 14: common.v2.Host.cpu:type_name -> common.v2.CPU
-	9,  // 15: common.v2.Host.memory:type_name -> common.v2.Memory
-	10, // 16: common.v2.Host.network:type_name -> common.v2.Network
-	11, // 17: common.v2.Host.disk:type_name -> common.v2.Disk
-	12, // 18: common.v2.Host.build:type_name -> common.v2.Build
-	8,  // 19: common.v2.CPU.times:type_name -> common.v2.CPUTimes
-	14, // 20: common.v2.Download.range:type_name -> common.v2.Range
-	1,  // 21: common.v2.Download.type:type_name -> common.v2.TaskType
-	3,  // 22: common.v2.Download.priority:type_name -> common.v2.Priority
-	17, // 23: common.v2.Download.request_header:type_name -> common.v2.Download.RequestHeaderEntry
-	18, // 24: common.v2.Download.timeout:type_name -> google.protobuf.Duration
-	2,  // 25: common.v2.Piece.traffic_type:type_name -> common.v2.TrafficType
-	18, // 26: common.v2.Piece.cost:type_name -> google.protobuf.Duration
-	19, // 27: common.v2.Piece.created_at:type_name -> google.protobuf.Timestamp
-	28, // [28:28] is the sub-list for method output_type
-	28, // [28:28] is the sub-list for method input_type
-	28, // [28:28] is the sub-list for extension type_name
-	28, // [28:28] is the sub-list for extension extendee
-	0,  // [0:28] is the sub-list for field type_name
+	17, // 2: common.v2.Peer.pieces:type_name -> common.v2.Piece
+	20, // 3: common.v2.Peer.cost:type_name -> google.protobuf.Duration
+	6,  // 4: common.v2.Peer.task:type_name -> common.v2.Task
+	8,  // 5: common.v2.Peer.host:type_name -> common.v2.Host
+	21, // 6: common.v2.Peer.created_at:type_name -> google.protobuf.Timestamp
+	21, // 7: common.v2.Peer.updated_at:type_name -> google.protobuf.Timestamp
+	20, // 8: common.v2.CachePeer.cost:type_name -> google.protobuf.Duration
+	7,  // 9: common.v2.CachePeer.task:type_name -> common.v2.CacheTask
+	8,  // 10: common.v2.CachePeer.host:type_name -> common.v2.Host
+	21, // 11: common.v2.CachePeer.created_at:type_name -> google.protobuf.Timestamp
+	21, // 12: common.v2.CachePeer.updated_at:type_name -> google.protobuf.Timestamp
+	1,  // 13: common.v2.Task.type:type_name -> common.v2.TaskType
+	18, // 14: common.v2.Task.request_header:type_name -> common.v2.Task.RequestHeaderEntry
+	0,  // 15: common.v2.Task.size_scope:type_name -> common.v2.SizeScope
+	17, // 16: common.v2.Task.pieces:type_name -> common.v2.Piece
+	21, // 17: common.v2.Task.created_at:type_name -> google.protobuf.Timestamp
+	21, // 18: common.v2.Task.updated_at:type_name -> google.protobuf.Timestamp
+	21, // 19: common.v2.CacheTask.created_at:type_name -> google.protobuf.Timestamp
+	21, // 20: common.v2.CacheTask.updated_at:type_name -> google.protobuf.Timestamp
+	9,  // 21: common.v2.Host.cpu:type_name -> common.v2.CPU
+	11, // 22: common.v2.Host.memory:type_name -> common.v2.Memory
+	12, // 23: common.v2.Host.network:type_name -> common.v2.Network
+	13, // 24: common.v2.Host.disk:type_name -> common.v2.Disk
+	14, // 25: common.v2.Host.build:type_name -> common.v2.Build
+	10, // 26: common.v2.CPU.times:type_name -> common.v2.CPUTimes
+	16, // 27: common.v2.DownloadTask.range:type_name -> common.v2.Range
+	1,  // 28: common.v2.DownloadTask.type:type_name -> common.v2.TaskType
+	3,  // 29: common.v2.DownloadTask.priority:type_name -> common.v2.Priority
+	19, // 30: common.v2.DownloadTask.request_header:type_name -> common.v2.DownloadTask.RequestHeaderEntry
+	20, // 31: common.v2.DownloadTask.timeout:type_name -> google.protobuf.Duration
+	2,  // 32: common.v2.Piece.traffic_type:type_name -> common.v2.TrafficType
+	20, // 33: common.v2.Piece.cost:type_name -> google.protobuf.Duration
+	21, // 34: common.v2.Piece.created_at:type_name -> google.protobuf.Timestamp
+	35, // [35:35] is the sub-list for method output_type
+	35, // [35:35] is the sub-list for method input_type
+	35, // [35:35] is the sub-list for extension type_name
+	35, // [35:35] is the sub-list for extension extendee
+	0,  // [0:35] is the sub-list for field type_name
 }
 
 func init() { file_pkg_apis_common_v2_common_proto_init() }
@@ -2253,7 +2591,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Task); i {
+			switch v := v.(*CachePeer); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2265,7 +2603,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Host); i {
+			switch v := v.(*Task); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2277,7 +2615,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CPU); i {
+			switch v := v.(*CacheTask); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2289,7 +2627,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CPUTimes); i {
+			switch v := v.(*Host); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2301,7 +2639,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Memory); i {
+			switch v := v.(*CPU); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2313,7 +2651,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Network); i {
+			switch v := v.(*CPUTimes); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2325,7 +2663,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Disk); i {
+			switch v := v.(*Memory); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2337,7 +2675,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Build); i {
+			switch v := v.(*Network); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2349,7 +2687,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Download); i {
+			switch v := v.(*Disk); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2361,7 +2699,7 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Range); i {
+			switch v := v.(*Build); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2373,6 +2711,30 @@ func file_pkg_apis_common_v2_common_proto_init() {
 			}
 		}
 		file_pkg_apis_common_v2_common_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DownloadTask); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_pkg_apis_common_v2_common_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Range); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_pkg_apis_common_v2_common_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Piece); i {
 			case 0:
 				return &v.state
@@ -2386,20 +2748,21 @@ func file_pkg_apis_common_v2_common_proto_init() {
 		}
 	}
 	file_pkg_apis_common_v2_common_proto_msgTypes[0].OneofWrappers = []interface{}{}
-	file_pkg_apis_common_v2_common_proto_msgTypes[1].OneofWrappers = []interface{}{}
 	file_pkg_apis_common_v2_common_proto_msgTypes[2].OneofWrappers = []interface{}{}
 	file_pkg_apis_common_v2_common_proto_msgTypes[3].OneofWrappers = []interface{}{}
-	file_pkg_apis_common_v2_common_proto_msgTypes[6].OneofWrappers = []interface{}{}
+	file_pkg_apis_common_v2_common_proto_msgTypes[4].OneofWrappers = []interface{}{}
+	file_pkg_apis_common_v2_common_proto_msgTypes[5].OneofWrappers = []interface{}{}
 	file_pkg_apis_common_v2_common_proto_msgTypes[8].OneofWrappers = []interface{}{}
-	file_pkg_apis_common_v2_common_proto_msgTypes[9].OneofWrappers = []interface{}{}
+	file_pkg_apis_common_v2_common_proto_msgTypes[10].OneofWrappers = []interface{}{}
 	file_pkg_apis_common_v2_common_proto_msgTypes[11].OneofWrappers = []interface{}{}
+	file_pkg_apis_common_v2_common_proto_msgTypes[13].OneofWrappers = []interface{}{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_pkg_apis_common_v2_common_proto_rawDesc,
 			NumEnums:      4,
-			NumMessages:   14,
+			NumMessages:   16,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/pkg/apis/common/v2/common.pb.validate.go b/pkg/apis/common/v2/common.pb.validate.go
index 3f49b64..a81434b 100644
--- a/pkg/apis/common/v2/common.pb.validate.go
+++ b/pkg/apis/common/v2/common.pb.validate.go
@@ -363,6 +363,242 @@ var _ interface {
 	ErrorName() string
 } = PeerValidationError{}
 
+// Validate checks the field values on CachePeer with the rules defined in the
+// proto definition for this message. If any rules are violated, the first
+// error encountered is returned, or nil if there are no violations.
+func (m *CachePeer) Validate() error {
+	return m.validate(false)
+}
+
+// ValidateAll checks the field values on CachePeer with the rules defined in
+// the proto definition for this message. If any rules are violated, the
+// result is a list of violation errors wrapped in CachePeerMultiError, or nil
+// if none found.
+func (m *CachePeer) ValidateAll() error {
+	return m.validate(true)
+}
+
+func (m *CachePeer) validate(all bool) error {
+	if m == nil {
+		return nil
+	}
+
+	var errors []error
+
+	if utf8.RuneCountInString(m.GetId()) < 1 {
+		err := CachePeerValidationError{
+			field:  "Id",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	// no validation rules for Persistent
+
+	if m.GetCost() == nil {
+		err := CachePeerValidationError{
+			field:  "Cost",
+			reason: "value is required",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if utf8.RuneCountInString(m.GetState()) < 1 {
+		err := CachePeerValidationError{
+			field:  "State",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetTask() == nil {
+		err := CachePeerValidationError{
+			field:  "Task",
+			reason: "value is required",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if all {
+		switch v := interface{}(m.GetTask()).(type) {
+		case interface{ ValidateAll() error }:
+			if err := v.ValidateAll(); err != nil {
+				errors = append(errors, CachePeerValidationError{
+					field:  "Task",
+					reason: "embedded message failed validation",
+					cause:  err,
+				})
+			}
+		case interface{ Validate() error }:
+			if err := v.Validate(); err != nil {
+				errors = append(errors, CachePeerValidationError{
+					field:  "Task",
+					reason: "embedded message failed validation",
+					cause:  err,
+				})
+			}
+		}
+	} else if v, ok := interface{}(m.GetTask()).(interface{ Validate() error }); ok {
+		if err := v.Validate(); err != nil {
+			return CachePeerValidationError{
+				field:  "Task",
+				reason: "embedded message failed validation",
+				cause:  err,
+			}
+		}
+	}
+
+	if m.GetHost() == nil {
+		err := CachePeerValidationError{
+			field:  "Host",
+			reason: "value is required",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if all {
+		switch v := interface{}(m.GetHost()).(type) {
+		case interface{ ValidateAll() error }:
+			if err := v.ValidateAll(); err != nil {
+				errors = append(errors, CachePeerValidationError{
+					field:  "Host",
+					reason: "embedded message failed validation",
+					cause:  err,
+				})
+			}
+		case interface{ Validate() error }:
+			if err := v.Validate(); err != nil {
+				errors = append(errors, CachePeerValidationError{
+					field:  "Host",
+					reason: "embedded message failed validation",
+					cause:  err,
+				})
+			}
+		}
+	} else if v, ok := interface{}(m.GetHost()).(interface{ Validate() error }); ok {
+		if err := v.Validate(); err != nil {
+			return CachePeerValidationError{
+				field:  "Host",
+				reason: "embedded message failed validation",
+				cause:  err,
+			}
+		}
+	}
+
+	if m.GetCreatedAt() == nil {
+		err := CachePeerValidationError{
+			field:  "CreatedAt",
+			reason: "value is required",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetUpdatedAt() == nil {
+		err := CachePeerValidationError{
+			field:  "UpdatedAt",
+			reason: "value is required",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if len(errors) > 0 {
+		return CachePeerMultiError(errors)
+	}
+
+	return nil
+}
+
+// CachePeerMultiError is an error wrapping multiple validation errors returned
+// by CachePeer.ValidateAll() if the designated constraints aren't met.
+type CachePeerMultiError []error
+
+// Error returns a concatenation of all the error messages it wraps.
+func (m CachePeerMultiError) Error() string {
+	var msgs []string
+	for _, err := range m {
+		msgs = append(msgs, err.Error())
+	}
+	return strings.Join(msgs, "; ")
+}
+
+// AllErrors returns a list of validation violation errors.
+func (m CachePeerMultiError) AllErrors() []error { return m }
+
+// CachePeerValidationError is the validation error returned by
+// CachePeer.Validate if the designated constraints aren't met.
+type CachePeerValidationError struct {
+	field  string
+	reason string
+	cause  error
+	key    bool
+}
+
+// Field function returns field value.
+func (e CachePeerValidationError) Field() string { return e.field }
+
+// Reason function returns reason value.
+func (e CachePeerValidationError) Reason() string { return e.reason }
+
+// Cause function returns cause value.
+func (e CachePeerValidationError) Cause() error { return e.cause }
+
+// Key function returns key value.
+func (e CachePeerValidationError) Key() bool { return e.key }
+
+// ErrorName returns error name.
+func (e CachePeerValidationError) ErrorName() string { return "CachePeerValidationError" }
+
+// Error satisfies the builtin error interface
+func (e CachePeerValidationError) Error() string {
+	cause := ""
+	if e.cause != nil {
+		cause = fmt.Sprintf(" | caused by: %v", e.cause)
+	}
+
+	key := ""
+	if e.key {
+		key = "key for "
+	}
+
+	return fmt.Sprintf(
+		"invalid %sCachePeer.%s: %s%s",
+		key,
+		e.field,
+		e.reason,
+		cause)
+}
+
+var _ error = CachePeerValidationError{}
+
+var _ interface {
+	Field() string
+	Reason() string
+	Key() bool
+	Cause() error
+	ErrorName() string
+} = CachePeerValidationError{}
+
 // Validate checks the field values on Task with the rules defined in the proto
 // definition for this message. If any rules are violated, the first error
 // encountered is returned, or nil if there are no violations.
@@ -638,6 +874,207 @@ var _ interface {
 
 var _Task_Digest_Pattern = regexp.MustCompile("^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$")
 
+// Validate checks the field values on CacheTask with the rules defined in the
+// proto definition for this message. If any rules are violated, the first
+// error encountered is returned, or nil if there are no violations.
+func (m *CacheTask) Validate() error {
+	return m.validate(false)
+}
+
+// ValidateAll checks the field values on CacheTask with the rules defined in
+// the proto definition for this message. If any rules are violated, the
+// result is a list of violation errors wrapped in CacheTaskMultiError, or nil
+// if none found.
+func (m *CacheTask) ValidateAll() error {
+	return m.validate(true)
+}
+
+func (m *CacheTask) validate(all bool) error {
+	if m == nil {
+		return nil
+	}
+
+	var errors []error
+
+	if utf8.RuneCountInString(m.GetId()) < 1 {
+		err := CacheTaskValidationError{
+			field:  "Id",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetPersistentReplicaCount() < 1 {
+		err := CacheTaskValidationError{
+			field:  "PersistentReplicaCount",
+			reason: "value must be greater than or equal to 1",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetReplicaCount() < 1 {
+		err := CacheTaskValidationError{
+			field:  "ReplicaCount",
+			reason: "value must be greater than or equal to 1",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if !_CacheTask_Digest_Pattern.MatchString(m.GetDigest()) {
+		err := CacheTaskValidationError{
+			field:  "Digest",
+			reason: "value does not match regex pattern \"^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$\"",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetPieceLength() < 1 {
+		err := CacheTaskValidationError{
+			field:  "PieceLength",
+			reason: "value must be greater than or equal to 1",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	// no validation rules for ContentLength
+
+	// no validation rules for PieceCount
+
+	if utf8.RuneCountInString(m.GetState()) < 1 {
+		err := CacheTaskValidationError{
+			field:  "State",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetCreatedAt() == nil {
+		err := CacheTaskValidationError{
+			field:  "CreatedAt",
+			reason: "value is required",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetUpdatedAt() == nil {
+		err := CacheTaskValidationError{
+			field:  "UpdatedAt",
+			reason: "value is required",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.Tag != nil {
+		// no validation rules for Tag
+	}
+
+	if m.Application != nil {
+		// no validation rules for Application
+	}
+
+	if len(errors) > 0 {
+		return CacheTaskMultiError(errors)
+	}
+
+	return nil
+}
+
+// CacheTaskMultiError is an error wrapping multiple validation errors returned
+// by CacheTask.ValidateAll() if the designated constraints aren't met.
+type CacheTaskMultiError []error
+
+// Error returns a concatenation of all the error messages it wraps.
+func (m CacheTaskMultiError) Error() string {
+	var msgs []string
+	for _, err := range m {
+		msgs = append(msgs, err.Error())
+	}
+	return strings.Join(msgs, "; ")
+}
+
+// AllErrors returns a list of validation violation errors.
+func (m CacheTaskMultiError) AllErrors() []error { return m }
+
+// CacheTaskValidationError is the validation error returned by
+// CacheTask.Validate if the designated constraints aren't met.
+type CacheTaskValidationError struct {
+	field  string
+	reason string
+	cause  error
+	key    bool
+}
+
+// Field function returns field value.
+func (e CacheTaskValidationError) Field() string { return e.field }
+
+// Reason function returns reason value.
+func (e CacheTaskValidationError) Reason() string { return e.reason }
+
+// Cause function returns cause value.
+func (e CacheTaskValidationError) Cause() error { return e.cause }
+
+// Key function returns key value.
+func (e CacheTaskValidationError) Key() bool { return e.key }
+
+// ErrorName returns error name.
+func (e CacheTaskValidationError) ErrorName() string { return "CacheTaskValidationError" }
+
+// Error satisfies the builtin error interface
+func (e CacheTaskValidationError) Error() string {
+	cause := ""
+	if e.cause != nil {
+		cause = fmt.Sprintf(" | caused by: %v", e.cause)
+	}
+
+	key := ""
+	if e.key {
+		key = "key for "
+	}
+
+	return fmt.Sprintf(
+		"invalid %sCacheTask.%s: %s%s",
+		key,
+		e.field,
+		e.reason,
+		cause)
+}
+
+var _ error = CacheTaskValidationError{}
+
+var _ interface {
+	Field() string
+	Reason() string
+	Key() bool
+	Cause() error
+	ErrorName() string
+} = CacheTaskValidationError{}
+
+var _CacheTask_Digest_Pattern = regexp.MustCompile("^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$")
+
 // Validate checks the field values on Host with the rules defined in the proto
 // definition for this message. If any rules are violated, the first error
 // encountered is returned, or nil if there are no violations.
@@ -1831,22 +2268,22 @@ var _ interface {
 	ErrorName() string
 } = BuildValidationError{}
 
-// Validate checks the field values on Download with the rules defined in the
-// proto definition for this message. If any rules are violated, the first
+// Validate checks the field values on DownloadTask with the rules defined in
+// the proto definition for this message. If any rules are violated, the first
 // error encountered is returned, or nil if there are no violations.
-func (m *Download) Validate() error {
+func (m *DownloadTask) Validate() error {
 	return m.validate(false)
 }
 
-// ValidateAll checks the field values on Download with the rules defined in
-// the proto definition for this message. If any rules are violated, the
-// result is a list of violation errors wrapped in DownloadMultiError, or nil
-// if none found.
-func (m *Download) ValidateAll() error {
+// ValidateAll checks the field values on DownloadTask with the rules defined
+// in the proto definition for this message. If any rules are violated, the
+// result is a list of violation errors wrapped in DownloadTaskMultiError, or
+// nil if none found.
+func (m *DownloadTask) ValidateAll() error {
 	return m.validate(true)
 }
 
-func (m *Download) validate(all bool) error {
+func (m *DownloadTask) validate(all bool) error {
 	if m == nil {
 		return nil
 	}
@@ -1854,7 +2291,7 @@ func (m *Download) validate(all bool) error {
 	var errors []error
 
 	if uri, err := url.Parse(m.GetUrl()); err != nil {
-		err = DownloadValidationError{
+		err = DownloadTaskValidationError{
 			field:  "Url",
 			reason: "value must be a valid URI",
 			cause:  err,
@@ -1864,7 +2301,7 @@ func (m *Download) validate(all bool) error {
 		}
 		errors = append(errors, err)
 	} else if !uri.IsAbs() {
-		err := DownloadValidationError{
+		err := DownloadTaskValidationError{
 			field:  "Url",
 			reason: "value must be absolute",
 		}
@@ -1875,7 +2312,7 @@ func (m *Download) validate(all bool) error {
 	}
 
 	if _, ok := TaskType_name[int32(m.GetType())]; !ok {
-		err := DownloadValidationError{
+		err := DownloadTaskValidationError{
 			field:  "Type",
 			reason: "value must be one of the defined enum values",
 		}
@@ -1886,7 +2323,7 @@ func (m *Download) validate(all bool) error {
 	}
 
 	if _, ok := Priority_name[int32(m.GetPriority())]; !ok {
-		err := DownloadValidationError{
+		err := DownloadTaskValidationError{
 			field:  "Priority",
 			reason: "value must be one of the defined enum values",
 		}
@@ -1899,7 +2336,7 @@ func (m *Download) validate(all bool) error {
 	// no validation rules for RequestHeader
 
 	if m.GetPieceLength() < 1 {
-		err := DownloadValidationError{
+		err := DownloadTaskValidationError{
 			field:  "PieceLength",
 			reason: "value must be greater than or equal to 1",
 		}
@@ -1919,8 +2356,8 @@ func (m *Download) validate(all bool) error {
 
 		if m.GetDigest() != "" {
 
-			if !_Download_Digest_Pattern.MatchString(m.GetDigest()) {
-				err := DownloadValidationError{
+			if !_DownloadTask_Digest_Pattern.MatchString(m.GetDigest()) {
+				err := DownloadTaskValidationError{
 					field:  "Digest",
 					reason: "value does not match regex pattern \"^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$\"",
 				}
@@ -1940,7 +2377,7 @@ func (m *Download) validate(all bool) error {
 			switch v := interface{}(m.GetRange()).(type) {
 			case interface{ ValidateAll() error }:
 				if err := v.ValidateAll(); err != nil {
-					errors = append(errors, DownloadValidationError{
+					errors = append(errors, DownloadTaskValidationError{
 						field:  "Range",
 						reason: "embedded message failed validation",
 						cause:  err,
@@ -1948,7 +2385,7 @@ func (m *Download) validate(all bool) error {
 				}
 			case interface{ Validate() error }:
 				if err := v.Validate(); err != nil {
-					errors = append(errors, DownloadValidationError{
+					errors = append(errors, DownloadTaskValidationError{
 						field:  "Range",
 						reason: "embedded message failed validation",
 						cause:  err,
@@ -1957,7 +2394,7 @@ func (m *Download) validate(all bool) error {
 			}
 		} else if v, ok := interface{}(m.GetRange()).(interface{ Validate() error }); ok {
 			if err := v.Validate(); err != nil {
-				return DownloadValidationError{
+				return DownloadTaskValidationError{
 					field:  "Range",
 					reason: "embedded message failed validation",
 					cause:  err,
@@ -1980,7 +2417,7 @@ func (m *Download) validate(all bool) error {
 		if m.GetOutputPath() != "" {
 
 			if utf8.RuneCountInString(m.GetOutputPath()) < 1 {
-				err := DownloadValidationError{
+				err := DownloadTaskValidationError{
 					field:  "OutputPath",
 					reason: "value length must be at least 1 runes",
 				}
@@ -2000,7 +2437,7 @@ func (m *Download) validate(all bool) error {
 			switch v := interface{}(m.GetTimeout()).(type) {
 			case interface{ ValidateAll() error }:
 				if err := v.ValidateAll(); err != nil {
-					errors = append(errors, DownloadValidationError{
+					errors = append(errors, DownloadTaskValidationError{
 						field:  "Timeout",
 						reason: "embedded message failed validation",
 						cause:  err,
@@ -2008,7 +2445,7 @@ func (m *Download) validate(all bool) error {
 				}
 			case interface{ Validate() error }:
 				if err := v.Validate(); err != nil {
-					errors = append(errors, DownloadValidationError{
+					errors = append(errors, DownloadTaskValidationError{
 						field:  "Timeout",
 						reason: "embedded message failed validation",
 						cause:  err,
@@ -2017,7 +2454,7 @@ func (m *Download) validate(all bool) error {
 			}
 		} else if v, ok := interface{}(m.GetTimeout()).(interface{ Validate() error }); ok {
 			if err := v.Validate(); err != nil {
-				return DownloadValidationError{
+				return DownloadTaskValidationError{
 					field:  "Timeout",
 					reason: "embedded message failed validation",
 					cause:  err,
@@ -2028,18 +2465,18 @@ func (m *Download) validate(all bool) error {
 	}
 
 	if len(errors) > 0 {
-		return DownloadMultiError(errors)
+		return DownloadTaskMultiError(errors)
 	}
 
 	return nil
 }
 
-// DownloadMultiError is an error wrapping multiple validation errors returned
-// by Download.ValidateAll() if the designated constraints aren't met.
-type DownloadMultiError []error
+// DownloadTaskMultiError is an error wrapping multiple validation errors
+// returned by DownloadTask.ValidateAll() if the designated constraints aren't met.
+type DownloadTaskMultiError []error
 
 // Error returns a concatenation of all the error messages it wraps.
-func (m DownloadMultiError) Error() string {
+func (m DownloadTaskMultiError) Error() string {
 	var msgs []string
 	for _, err := range m {
 		msgs = append(msgs, err.Error())
@@ -2048,11 +2485,11 @@ func (m DownloadMultiError) Error() string {
 }
 
 // AllErrors returns a list of validation violation errors.
-func (m DownloadMultiError) AllErrors() []error { return m }
+func (m DownloadTaskMultiError) AllErrors() []error { return m }
 
-// DownloadValidationError is the validation error returned by
-// Download.Validate if the designated constraints aren't met.
-type DownloadValidationError struct {
+// DownloadTaskValidationError is the validation error returned by
+// DownloadTask.Validate if the designated constraints aren't met.
+type DownloadTaskValidationError struct {
 	field  string
 	reason string
 	cause  error
@@ -2060,22 +2497,22 @@ type DownloadValidationError struct {
 }
 
 // Field function returns field value.
-func (e DownloadValidationError) Field() string { return e.field }
+func (e DownloadTaskValidationError) Field() string { return e.field }
 
 // Reason function returns reason value.
-func (e DownloadValidationError) Reason() string { return e.reason }
+func (e DownloadTaskValidationError) Reason() string { return e.reason }
 
 // Cause function returns cause value.
-func (e DownloadValidationError) Cause() error { return e.cause }
+func (e DownloadTaskValidationError) Cause() error { return e.cause }
 
 // Key function returns key value.
-func (e DownloadValidationError) Key() bool { return e.key }
+func (e DownloadTaskValidationError) Key() bool { return e.key }
 
 // ErrorName returns error name.
-func (e DownloadValidationError) ErrorName() string { return "DownloadValidationError" }
+func (e DownloadTaskValidationError) ErrorName() string { return "DownloadTaskValidationError" }
 
 // Error satisfies the builtin error interface
-func (e DownloadValidationError) Error() string {
+func (e DownloadTaskValidationError) Error() string {
 	cause := ""
 	if e.cause != nil {
 		cause = fmt.Sprintf(" | caused by: %v", e.cause)
@@ -2087,14 +2524,14 @@ func (e DownloadValidationError) Error() string {
 	}
 
 	return fmt.Sprintf(
-		"invalid %sDownload.%s: %s%s",
+		"invalid %sDownloadTask.%s: %s%s",
 		key,
 		e.field,
 		e.reason,
 		cause)
 }
 
-var _ error = DownloadValidationError{}
+var _ error = DownloadTaskValidationError{}
 
 var _ interface {
 	Field() string
@@ -2102,9 +2539,9 @@ var _ interface {
 	Key() bool
 	Cause() error
 	ErrorName() string
-} = DownloadValidationError{}
+} = DownloadTaskValidationError{}
 
-var _Download_Digest_Pattern = regexp.MustCompile("^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$")
+var _DownloadTask_Digest_Pattern = regexp.MustCompile("^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$")
 
 // Validate checks the field values on Range with the rules defined in the
 // proto definition for this message. If any rules are violated, the first
diff --git a/pkg/apis/common/v2/common.proto b/pkg/apis/common/v2/common.proto
index 08739c7..f252d7c 100644
--- a/pkg/apis/common/v2/common.proto
+++ b/pkg/apis/common/v2/common.proto
@@ -132,6 +132,28 @@ message Peer {
   google.protobuf.Timestamp updated_at = 11 [(validate.rules).timestamp.required = true];
 }
 
+// CachePeer metadata.
+message CachePeer {
+  // Peer id.
+  string id = 1 [(validate.rules).string.min_len = 1];
+  // Persistent represents whether the cache peer is persistent.
+  // If the cache peer is persistent, the cache peer will
+  // not be deleted when dfdamon runs garbage collection.
+  bool persistent = 2;
+  // Peer downloads costs time.
+  google.protobuf.Duration cost = 3 [(validate.rules).duration.required = true];
+  // Peer state.
+  string state = 4 [(validate.rules).string.min_len = 1];
+  // Task info.
+  CacheTask task = 5 [(validate.rules).message.required = true];
+  // Host info.
+  Host host = 6 [(validate.rules).message.required = true];
+  // Peer create time.
+  google.protobuf.Timestamp created_at = 7 [(validate.rules).timestamp.required = true];
+  // Peer update time.
+  google.protobuf.Timestamp updated_at = 8 [(validate.rules).timestamp.required = true];
+}
+
 // Task metadata.
 message Task {
   // Task id.
@@ -140,7 +162,7 @@ message Task {
   TaskType type = 2 [(validate.rules).enum.defined_only = true];
   // Download url.
   string url = 3 [(validate.rules).string.uri = true];
-  // Digest of the task digest, for example md5:xxx or sha256:yyy.
+  // Digest of the task digest, for example blake3:xxx or sha256:yyy.
   optional string digest = 4 [(validate.rules).string = {pattern: "^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$", ignore_empty: true}];
   // URL tag identifies different task for same url.
   optional string tag = 5;
@@ -155,7 +177,7 @@ message Task {
   // Task request headers.
   map<string, string> request_header = 8;
   // Task piece length.
-  uint32 piece_length = 9 [(validate.rules).uint32.gte = 1];
+  uint64 piece_length = 9 [(validate.rules).uint64.gte = 1];
   // Task content length.
   uint64 content_length = 10;
   // Task piece count.
@@ -176,6 +198,34 @@ message Task {
   google.protobuf.Timestamp updated_at = 18 [(validate.rules).timestamp.required = true];
 }
 
+// CacheTask metadata.
+message CacheTask {
+  // Task id.
+  string id = 1 [(validate.rules).string.min_len = 1];
+  // Replica count of the persistent cache task.
+  uint64 persistent_replica_count = 2 [(validate.rules).uint64.gte = 1];
+  // Replica count of the cache task.
+  uint64 replica_count = 3 [(validate.rules).uint64.gte = 1];
+  // Digest of the task digest, for example blake3:xxx or sha256:yyy.
+  string digest = 4 [(validate.rules).string = {pattern: "^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$"}];
+  // Tag is used to distinguish different cache tasks.
+  optional string tag = 5;
+  // Application of task.
+  optional string application = 6;
+  // Task piece length.
+  uint64 piece_length = 7 [(validate.rules).uint64.gte = 1];
+  // Task content length.
+  uint64 content_length = 8;
+  // Task piece count.
+  uint32 piece_count = 9;
+  // Task state.
+  string state = 10 [(validate.rules).string.min_len = 1];
+  // Task create time.
+  google.protobuf.Timestamp created_at = 11 [(validate.rules).timestamp.required = true];
+  // Task update time.
+  google.protobuf.Timestamp updated_at = 12 [(validate.rules).timestamp.required = true];
+}
+
 // Host metadata.
 message Host {
   // Host id.
@@ -315,11 +365,11 @@ message Build {
   optional string platform = 5;
 }
 
-// Download information.
-message Download {
+// DownloadTask information.
+message DownloadTask {
   // Download url.
   string url = 1 [(validate.rules).string.uri = true];
-  // Digest of the task digest, for example md5:xxx or sha256:yyy.
+  // Digest of the task digest, for example blake3:xxx or sha256:yyy.
   optional string digest = 2 [(validate.rules).string = {pattern: "^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$", ignore_empty: true}];
   // Range is url range of request. If protocol is http, range
   // will set in request header. If protocol is others, range
@@ -342,7 +392,7 @@ message Download {
   // Task request headers.
   map<string, string> request_header = 9;
   // Task piece length.
-  uint32 piece_length = 10 [(validate.rules).uint32.gte = 1];
+  uint64 piece_length = 10 [(validate.rules).uint64.gte = 1];
   // File path to be exported.
   optional string output_path = 11 [(validate.rules).string = {min_len: 1, ignore_empty: true}];
   // Download timeout.
@@ -375,7 +425,7 @@ message Piece {
   uint64 offset = 3;
   // Piece length.
   uint64 length = 4;
-  // Digest of the piece data, for example md5:xxx or sha256:yyy.
+  // Digest of the piece data, for example blake3:xxx or sha256:yyy.
   string digest = 5 [(validate.rules).string = {pattern: "^(md5:[a-fA-F0-9]{32}|sha1:[a-fA-F0-9]{40}|sha256:[a-fA-F0-9]{64}|sha512:[a-fA-F0-9]{128}|blake3:[a-fA-F0-9]{64})$", ignore_empty: true}];
   // Piece content.
   optional bytes content = 6 [(validate.rules).bytes = {min_len: 1, ignore_empty: true}];
diff --git a/pkg/apis/dfdaemon/v2/dfdaemon.pb.go b/pkg/apis/dfdaemon/v2/dfdaemon.pb.go
index c53a82b..a83d4a5 100644
--- a/pkg/apis/dfdaemon/v2/dfdaemon.pb.go
+++ b/pkg/apis/dfdaemon/v2/dfdaemon.pb.go
@@ -26,6 +26,7 @@ import (
 	_ "github.com/envoyproxy/protoc-gen-validate/validate"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	durationpb "google.golang.org/protobuf/types/known/durationpb"
 	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
@@ -45,7 +46,7 @@ type DownloadTaskRequest struct {
 	unknownFields protoimpl.UnknownFields
 
 	// Download information.
-	Download *v2.Download `protobuf:"bytes,1,opt,name=download,proto3" json:"download,omitempty"`
+	DownloadTask *v2.DownloadTask `protobuf:"bytes,1,opt,name=download_task,json=downloadTask,proto3" json:"download_task,omitempty"`
 }
 
 func (x *DownloadTaskRequest) Reset() {
@@ -80,9 +81,9 @@ func (*DownloadTaskRequest) Descriptor() ([]byte, []int) {
 	return file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *DownloadTaskRequest) GetDownload() *v2.Download {
+func (x *DownloadTaskRequest) GetDownloadTask() *v2.DownloadTask {
 	if x != nil {
-		return x.Download
+		return x.DownloadTask
 	}
 	return nil
 }
@@ -720,6 +721,451 @@ func (x *DeleteTaskRequest) GetTaskId() string {
 	return ""
 }
 
+// DownloadCacheTaskRequest represents request of DownloadCacheTask.
+type DownloadCacheTaskRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Host id.
+	HostId string `protobuf:"bytes,1,opt,name=host_id,json=hostId,proto3" json:"host_id,omitempty"`
+	// Task id.
+	TaskId string `protobuf:"bytes,2,opt,name=task_id,json=taskId,proto3" json:"task_id,omitempty"`
+	// Tag is used to distinguish different cache tasks.
+	Tag *string `protobuf:"bytes,3,opt,name=tag,proto3,oneof" json:"tag,omitempty"`
+	// Application of task.
+	Application *string `protobuf:"bytes,4,opt,name=application,proto3,oneof" json:"application,omitempty"`
+	// Task piece length.
+	PieceLength uint64 `protobuf:"varint,5,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
+	// File path to be exported.
+	OutputPath string `protobuf:"bytes,6,opt,name=output_path,json=outputPath,proto3" json:"output_path,omitempty"`
+	// Download timeout.
+	Timeout *durationpb.Duration `protobuf:"bytes,7,opt,name=timeout,proto3,oneof" json:"timeout,omitempty"`
+}
+
+func (x *DownloadCacheTaskRequest) Reset() {
+	*x = DownloadCacheTaskRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DownloadCacheTaskRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DownloadCacheTaskRequest) ProtoMessage() {}
+
+func (x *DownloadCacheTaskRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DownloadCacheTaskRequest.ProtoReflect.Descriptor instead.
+func (*DownloadCacheTaskRequest) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescGZIP(), []int{11}
+}
+
+func (x *DownloadCacheTaskRequest) GetHostId() string {
+	if x != nil {
+		return x.HostId
+	}
+	return ""
+}
+
+func (x *DownloadCacheTaskRequest) GetTaskId() string {
+	if x != nil {
+		return x.TaskId
+	}
+	return ""
+}
+
+func (x *DownloadCacheTaskRequest) GetTag() string {
+	if x != nil && x.Tag != nil {
+		return *x.Tag
+	}
+	return ""
+}
+
+func (x *DownloadCacheTaskRequest) GetApplication() string {
+	if x != nil && x.Application != nil {
+		return *x.Application
+	}
+	return ""
+}
+
+func (x *DownloadCacheTaskRequest) GetPieceLength() uint64 {
+	if x != nil {
+		return x.PieceLength
+	}
+	return 0
+}
+
+func (x *DownloadCacheTaskRequest) GetOutputPath() string {
+	if x != nil {
+		return x.OutputPath
+	}
+	return ""
+}
+
+func (x *DownloadCacheTaskRequest) GetTimeout() *durationpb.Duration {
+	if x != nil {
+		return x.Timeout
+	}
+	return nil
+}
+
+// DownloadCacheTaskStartedResponse represents task download started response of DownloadCacheTaskResponse.
+type DownloadCacheTaskStartedResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *DownloadCacheTaskStartedResponse) Reset() {
+	*x = DownloadCacheTaskStartedResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DownloadCacheTaskStartedResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DownloadCacheTaskStartedResponse) ProtoMessage() {}
+
+func (x *DownloadCacheTaskStartedResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DownloadCacheTaskStartedResponse.ProtoReflect.Descriptor instead.
+func (*DownloadCacheTaskStartedResponse) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescGZIP(), []int{12}
+}
+
+// DownloadCacheTaskResponse represents response of DownloadCacheTask.
+type DownloadCacheTaskResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Host id.
+	HostId string `protobuf:"bytes,1,opt,name=host_id,json=hostId,proto3" json:"host_id,omitempty"`
+	// Task id.
+	TaskId string `protobuf:"bytes,2,opt,name=task_id,json=taskId,proto3" json:"task_id,omitempty"`
+	// Peer id.
+	PeerId string `protobuf:"bytes,3,opt,name=peer_id,json=peerId,proto3" json:"peer_id,omitempty"`
+	// Types that are assignable to Response:
+	//
+	//	*DownloadCacheTaskResponse_DownloadCacheTaskStartedResponse
+	//	*DownloadCacheTaskResponse_DownloadPieceFinishedResponse
+	Response isDownloadCacheTaskResponse_Response `protobuf_oneof:"response"`
+}
+
+func (x *DownloadCacheTaskResponse) Reset() {
+	*x = DownloadCacheTaskResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DownloadCacheTaskResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DownloadCacheTaskResponse) ProtoMessage() {}
+
+func (x *DownloadCacheTaskResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[13]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DownloadCacheTaskResponse.ProtoReflect.Descriptor instead.
+func (*DownloadCacheTaskResponse) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescGZIP(), []int{13}
+}
+
+func (x *DownloadCacheTaskResponse) GetHostId() string {
+	if x != nil {
+		return x.HostId
+	}
+	return ""
+}
+
+func (x *DownloadCacheTaskResponse) GetTaskId() string {
+	if x != nil {
+		return x.TaskId
+	}
+	return ""
+}
+
+func (x *DownloadCacheTaskResponse) GetPeerId() string {
+	if x != nil {
+		return x.PeerId
+	}
+	return ""
+}
+
+func (m *DownloadCacheTaskResponse) GetResponse() isDownloadCacheTaskResponse_Response {
+	if m != nil {
+		return m.Response
+	}
+	return nil
+}
+
+func (x *DownloadCacheTaskResponse) GetDownloadCacheTaskStartedResponse() *DownloadCacheTaskStartedResponse {
+	if x, ok := x.GetResponse().(*DownloadCacheTaskResponse_DownloadCacheTaskStartedResponse); ok {
+		return x.DownloadCacheTaskStartedResponse
+	}
+	return nil
+}
+
+func (x *DownloadCacheTaskResponse) GetDownloadPieceFinishedResponse() *DownloadPieceFinishedResponse {
+	if x, ok := x.GetResponse().(*DownloadCacheTaskResponse_DownloadPieceFinishedResponse); ok {
+		return x.DownloadPieceFinishedResponse
+	}
+	return nil
+}
+
+type isDownloadCacheTaskResponse_Response interface {
+	isDownloadCacheTaskResponse_Response()
+}
+
+type DownloadCacheTaskResponse_DownloadCacheTaskStartedResponse struct {
+	DownloadCacheTaskStartedResponse *DownloadCacheTaskStartedResponse `protobuf:"bytes,4,opt,name=download_cache_task_started_response,json=downloadCacheTaskStartedResponse,proto3,oneof"`
+}
+
+type DownloadCacheTaskResponse_DownloadPieceFinishedResponse struct {
+	DownloadPieceFinishedResponse *DownloadPieceFinishedResponse `protobuf:"bytes,5,opt,name=download_piece_finished_response,json=downloadPieceFinishedResponse,proto3,oneof"`
+}
+
+func (*DownloadCacheTaskResponse_DownloadCacheTaskStartedResponse) isDownloadCacheTaskResponse_Response() {
+}
+
+func (*DownloadCacheTaskResponse_DownloadPieceFinishedResponse) isDownloadCacheTaskResponse_Response() {
+}
+
+// UploadCacheTaskRequest represents request of UploadCacheTask.
+type UploadCacheTaskRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Upload file path of cache task.
+	Path string `protobuf:"bytes,1,opt,name=path,proto3" json:"path,omitempty"`
+	// Replica count of the persistent cache task.
+	PersistentReplicaCount uint64 `protobuf:"varint,2,opt,name=persistent_replica_count,json=persistentReplicaCount,proto3" json:"persistent_replica_count,omitempty"`
+	// Tag is used to distinguish different cache tasks.
+	Tag *string `protobuf:"bytes,3,opt,name=tag,proto3,oneof" json:"tag,omitempty"`
+	// Application of task.
+	Application *string `protobuf:"bytes,4,opt,name=application,proto3,oneof" json:"application,omitempty"`
+	// Task piece length.
+	PieceLength uint64 `protobuf:"varint,5,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
+	// Download timeout.
+	Timeout *durationpb.Duration `protobuf:"bytes,6,opt,name=timeout,proto3,oneof" json:"timeout,omitempty"`
+}
+
+func (x *UploadCacheTaskRequest) Reset() {
+	*x = UploadCacheTaskRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *UploadCacheTaskRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*UploadCacheTaskRequest) ProtoMessage() {}
+
+func (x *UploadCacheTaskRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[14]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use UploadCacheTaskRequest.ProtoReflect.Descriptor instead.
+func (*UploadCacheTaskRequest) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescGZIP(), []int{14}
+}
+
+func (x *UploadCacheTaskRequest) GetPath() string {
+	if x != nil {
+		return x.Path
+	}
+	return ""
+}
+
+func (x *UploadCacheTaskRequest) GetPersistentReplicaCount() uint64 {
+	if x != nil {
+		return x.PersistentReplicaCount
+	}
+	return 0
+}
+
+func (x *UploadCacheTaskRequest) GetTag() string {
+	if x != nil && x.Tag != nil {
+		return *x.Tag
+	}
+	return ""
+}
+
+func (x *UploadCacheTaskRequest) GetApplication() string {
+	if x != nil && x.Application != nil {
+		return *x.Application
+	}
+	return ""
+}
+
+func (x *UploadCacheTaskRequest) GetPieceLength() uint64 {
+	if x != nil {
+		return x.PieceLength
+	}
+	return 0
+}
+
+func (x *UploadCacheTaskRequest) GetTimeout() *durationpb.Duration {
+	if x != nil {
+		return x.Timeout
+	}
+	return nil
+}
+
+// StatCacheTaskRequest represents request of StatCacheTask.
+type StatCacheTaskRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Task id.
+	TaskId string `protobuf:"bytes,1,opt,name=task_id,json=taskId,proto3" json:"task_id,omitempty"`
+}
+
+func (x *StatCacheTaskRequest) Reset() {
+	*x = StatCacheTaskRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[15]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StatCacheTaskRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StatCacheTaskRequest) ProtoMessage() {}
+
+func (x *StatCacheTaskRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[15]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StatCacheTaskRequest.ProtoReflect.Descriptor instead.
+func (*StatCacheTaskRequest) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescGZIP(), []int{15}
+}
+
+func (x *StatCacheTaskRequest) GetTaskId() string {
+	if x != nil {
+		return x.TaskId
+	}
+	return ""
+}
+
+// DeleteCacheTaskRequest represents request of DeleteCacheTask.
+type DeleteCacheTaskRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Task id.
+	TaskId string `protobuf:"bytes,1,opt,name=task_id,json=taskId,proto3" json:"task_id,omitempty"`
+}
+
+func (x *DeleteCacheTaskRequest) Reset() {
+	*x = DeleteCacheTaskRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[16]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteCacheTaskRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteCacheTaskRequest) ProtoMessage() {}
+
+func (x *DeleteCacheTaskRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[16]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteCacheTaskRequest.ProtoReflect.Descriptor instead.
+func (*DeleteCacheTaskRequest) Descriptor() ([]byte, []int) {
+	return file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescGZIP(), []int{16}
+}
+
+func (x *DeleteCacheTaskRequest) GetTaskId() string {
+	if x != nil {
+		return x.TaskId
+	}
+	return ""
+}
+
 var File_pkg_apis_dfdaemon_v2_dfdaemon_proto protoreflect.FileDescriptor
 
 var file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDesc = []byte{
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 }
 
 var (
@@ -884,57 +1445,83 @@ func file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescGZIP() []byte {
 	return file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDescData
 }
 
-var file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
 var file_pkg_apis_dfdaemon_v2_dfdaemon_proto_goTypes = []interface{}{
-	(*DownloadTaskRequest)(nil),           // 0: dfdaemon.v2.DownloadTaskRequest
-	(*DownloadTaskStartedResponse)(nil),   // 1: dfdaemon.v2.DownloadTaskStartedResponse
-	(*DownloadPieceFinishedResponse)(nil), // 2: dfdaemon.v2.DownloadPieceFinishedResponse
-	(*DownloadTaskResponse)(nil),          // 3: dfdaemon.v2.DownloadTaskResponse
-	(*SyncPiecesRequest)(nil),             // 4: dfdaemon.v2.SyncPiecesRequest
-	(*SyncPiecesResponse)(nil),            // 5: dfdaemon.v2.SyncPiecesResponse
-	(*DownloadPieceRequest)(nil),          // 6: dfdaemon.v2.DownloadPieceRequest
-	(*DownloadPieceResponse)(nil),         // 7: dfdaemon.v2.DownloadPieceResponse
-	(*UploadTaskRequest)(nil),             // 8: dfdaemon.v2.UploadTaskRequest
-	(*StatTaskRequest)(nil),               // 9: dfdaemon.v2.StatTaskRequest
-	(*DeleteTaskRequest)(nil),             // 10: dfdaemon.v2.DeleteTaskRequest
-	nil,                                   // 11: dfdaemon.v2.DownloadTaskStartedResponse.ResponseHeaderEntry
-	(*v2.Download)(nil),                   // 12: common.v2.Download
-	(*v2.Range)(nil),                      // 13: common.v2.Range
-	(*v2.Piece)(nil),                      // 14: common.v2.Piece
-	(*v2.Task)(nil),                       // 15: common.v2.Task
-	(*emptypb.Empty)(nil),                 // 16: google.protobuf.Empty
+	(*DownloadTaskRequest)(nil),              // 0: dfdaemon.v2.DownloadTaskRequest
+	(*DownloadTaskStartedResponse)(nil),      // 1: dfdaemon.v2.DownloadTaskStartedResponse
+	(*DownloadPieceFinishedResponse)(nil),    // 2: dfdaemon.v2.DownloadPieceFinishedResponse
+	(*DownloadTaskResponse)(nil),             // 3: dfdaemon.v2.DownloadTaskResponse
+	(*SyncPiecesRequest)(nil),                // 4: dfdaemon.v2.SyncPiecesRequest
+	(*SyncPiecesResponse)(nil),               // 5: dfdaemon.v2.SyncPiecesResponse
+	(*DownloadPieceRequest)(nil),             // 6: dfdaemon.v2.DownloadPieceRequest
+	(*DownloadPieceResponse)(nil),            // 7: dfdaemon.v2.DownloadPieceResponse
+	(*UploadTaskRequest)(nil),                // 8: dfdaemon.v2.UploadTaskRequest
+	(*StatTaskRequest)(nil),                  // 9: dfdaemon.v2.StatTaskRequest
+	(*DeleteTaskRequest)(nil),                // 10: dfdaemon.v2.DeleteTaskRequest
+	(*DownloadCacheTaskRequest)(nil),         // 11: dfdaemon.v2.DownloadCacheTaskRequest
+	(*DownloadCacheTaskStartedResponse)(nil), // 12: dfdaemon.v2.DownloadCacheTaskStartedResponse
+	(*DownloadCacheTaskResponse)(nil),        // 13: dfdaemon.v2.DownloadCacheTaskResponse
+	(*UploadCacheTaskRequest)(nil),           // 14: dfdaemon.v2.UploadCacheTaskRequest
+	(*StatCacheTaskRequest)(nil),             // 15: dfdaemon.v2.StatCacheTaskRequest
+	(*DeleteCacheTaskRequest)(nil),           // 16: dfdaemon.v2.DeleteCacheTaskRequest
+	nil,                                      // 17: dfdaemon.v2.DownloadTaskStartedResponse.ResponseHeaderEntry
+	(*v2.DownloadTask)(nil),                  // 18: common.v2.DownloadTask
+	(*v2.Range)(nil),                         // 19: common.v2.Range
+	(*v2.Piece)(nil),                         // 20: common.v2.Piece
+	(*v2.Task)(nil),                          // 21: common.v2.Task
+	(*durationpb.Duration)(nil),              // 22: google.protobuf.Duration
+	(*emptypb.Empty)(nil),                    // 23: google.protobuf.Empty
+	(*v2.CacheTask)(nil),                     // 24: common.v2.CacheTask
 }
 var file_pkg_apis_dfdaemon_v2_dfdaemon_proto_depIdxs = []int32{
-	12, // 0: dfdaemon.v2.DownloadTaskRequest.download:type_name -> common.v2.Download
-	13, // 1: dfdaemon.v2.DownloadTaskStartedResponse.range:type_name -> common.v2.Range
-	11, // 2: dfdaemon.v2.DownloadTaskStartedResponse.response_header:type_name -> dfdaemon.v2.DownloadTaskStartedResponse.ResponseHeaderEntry
-	14, // 3: dfdaemon.v2.DownloadTaskStartedResponse.pieces:type_name -> common.v2.Piece
-	14, // 4: dfdaemon.v2.DownloadPieceFinishedResponse.piece:type_name -> common.v2.Piece
+	18, // 0: dfdaemon.v2.DownloadTaskRequest.download_task:type_name -> common.v2.DownloadTask
+	19, // 1: dfdaemon.v2.DownloadTaskStartedResponse.range:type_name -> common.v2.Range
+	17, // 2: dfdaemon.v2.DownloadTaskStartedResponse.response_header:type_name -> dfdaemon.v2.DownloadTaskStartedResponse.ResponseHeaderEntry
+	20, // 3: dfdaemon.v2.DownloadTaskStartedResponse.pieces:type_name -> common.v2.Piece
+	20, // 4: dfdaemon.v2.DownloadPieceFinishedResponse.piece:type_name -> common.v2.Piece
 	1,  // 5: dfdaemon.v2.DownloadTaskResponse.download_task_started_response:type_name -> dfdaemon.v2.DownloadTaskStartedResponse
 	2,  // 6: dfdaemon.v2.DownloadTaskResponse.download_piece_finished_response:type_name -> dfdaemon.v2.DownloadPieceFinishedResponse
-	14, // 7: dfdaemon.v2.DownloadPieceResponse.piece:type_name -> common.v2.Piece
-	15, // 8: dfdaemon.v2.UploadTaskRequest.task:type_name -> common.v2.Task
-	0,  // 9: dfdaemon.v2.DfdaemonUpload.DownloadTask:input_type -> dfdaemon.v2.DownloadTaskRequest
-	4,  // 10: dfdaemon.v2.DfdaemonUpload.SyncPieces:input_type -> dfdaemon.v2.SyncPiecesRequest
-	6,  // 11: dfdaemon.v2.DfdaemonUpload.DownloadPiece:input_type -> dfdaemon.v2.DownloadPieceRequest
-	0,  // 12: dfdaemon.v2.DfdaemonDownload.DownloadTask:input_type -> dfdaemon.v2.DownloadTaskRequest
-	8,  // 13: dfdaemon.v2.DfdaemonDownload.UploadTask:input_type -> dfdaemon.v2.UploadTaskRequest
-	9,  // 14: dfdaemon.v2.DfdaemonDownload.StatTask:input_type -> dfdaemon.v2.StatTaskRequest
-	10, // 15: dfdaemon.v2.DfdaemonDownload.DeleteTask:input_type -> dfdaemon.v2.DeleteTaskRequest
-	16, // 16: dfdaemon.v2.DfdaemonDownload.LeaveHost:input_type -> google.protobuf.Empty
-	3,  // 17: dfdaemon.v2.DfdaemonUpload.DownloadTask:output_type -> dfdaemon.v2.DownloadTaskResponse
-	5,  // 18: dfdaemon.v2.DfdaemonUpload.SyncPieces:output_type -> dfdaemon.v2.SyncPiecesResponse
-	7,  // 19: dfdaemon.v2.DfdaemonUpload.DownloadPiece:output_type -> dfdaemon.v2.DownloadPieceResponse
-	3,  // 20: dfdaemon.v2.DfdaemonDownload.DownloadTask:output_type -> dfdaemon.v2.DownloadTaskResponse
-	16, // 21: dfdaemon.v2.DfdaemonDownload.UploadTask:output_type -> google.protobuf.Empty
-	15, // 22: dfdaemon.v2.DfdaemonDownload.StatTask:output_type -> common.v2.Task
-	16, // 23: dfdaemon.v2.DfdaemonDownload.DeleteTask:output_type -> google.protobuf.Empty
-	16, // 24: dfdaemon.v2.DfdaemonDownload.LeaveHost:output_type -> google.protobuf.Empty
-	17, // [17:25] is the sub-list for method output_type
-	9,  // [9:17] is the sub-list for method input_type
-	9,  // [9:9] is the sub-list for extension type_name
-	9,  // [9:9] is the sub-list for extension extendee
-	0,  // [0:9] is the sub-list for field type_name
+	20, // 7: dfdaemon.v2.DownloadPieceResponse.piece:type_name -> common.v2.Piece
+	21, // 8: dfdaemon.v2.UploadTaskRequest.task:type_name -> common.v2.Task
+	22, // 9: dfdaemon.v2.DownloadCacheTaskRequest.timeout:type_name -> google.protobuf.Duration
+	12, // 10: dfdaemon.v2.DownloadCacheTaskResponse.download_cache_task_started_response:type_name -> dfdaemon.v2.DownloadCacheTaskStartedResponse
+	2,  // 11: dfdaemon.v2.DownloadCacheTaskResponse.download_piece_finished_response:type_name -> dfdaemon.v2.DownloadPieceFinishedResponse
+	22, // 12: dfdaemon.v2.UploadCacheTaskRequest.timeout:type_name -> google.protobuf.Duration
+	0,  // 13: dfdaemon.v2.DfdaemonUpload.DownloadTask:input_type -> dfdaemon.v2.DownloadTaskRequest
+	4,  // 14: dfdaemon.v2.DfdaemonUpload.SyncPieces:input_type -> dfdaemon.v2.SyncPiecesRequest
+	6,  // 15: dfdaemon.v2.DfdaemonUpload.DownloadPiece:input_type -> dfdaemon.v2.DownloadPieceRequest
+	11, // 16: dfdaemon.v2.DfdaemonUpload.DownloadCacheTask:input_type -> dfdaemon.v2.DownloadCacheTaskRequest
+	15, // 17: dfdaemon.v2.DfdaemonUpload.StatCacheTask:input_type -> dfdaemon.v2.StatCacheTaskRequest
+	16, // 18: dfdaemon.v2.DfdaemonUpload.DeleteCacheTask:input_type -> dfdaemon.v2.DeleteCacheTaskRequest
+	0,  // 19: dfdaemon.v2.DfdaemonDownload.DownloadTask:input_type -> dfdaemon.v2.DownloadTaskRequest
+	8,  // 20: dfdaemon.v2.DfdaemonDownload.UploadTask:input_type -> dfdaemon.v2.UploadTaskRequest
+	9,  // 21: dfdaemon.v2.DfdaemonDownload.StatTask:input_type -> dfdaemon.v2.StatTaskRequest
+	10, // 22: dfdaemon.v2.DfdaemonDownload.DeleteTask:input_type -> dfdaemon.v2.DeleteTaskRequest
+	23, // 23: dfdaemon.v2.DfdaemonDownload.LeaveHost:input_type -> google.protobuf.Empty
+	11, // 24: dfdaemon.v2.DfdaemonDownload.DownloadCacheTask:input_type -> dfdaemon.v2.DownloadCacheTaskRequest
+	14, // 25: dfdaemon.v2.DfdaemonDownload.UploadCacheTask:input_type -> dfdaemon.v2.UploadCacheTaskRequest
+	15, // 26: dfdaemon.v2.DfdaemonDownload.StatCacheTask:input_type -> dfdaemon.v2.StatCacheTaskRequest
+	16, // 27: dfdaemon.v2.DfdaemonDownload.DeleteCacheTask:input_type -> dfdaemon.v2.DeleteCacheTaskRequest
+	3,  // 28: dfdaemon.v2.DfdaemonUpload.DownloadTask:output_type -> dfdaemon.v2.DownloadTaskResponse
+	5,  // 29: dfdaemon.v2.DfdaemonUpload.SyncPieces:output_type -> dfdaemon.v2.SyncPiecesResponse
+	7,  // 30: dfdaemon.v2.DfdaemonUpload.DownloadPiece:output_type -> dfdaemon.v2.DownloadPieceResponse
+	13, // 31: dfdaemon.v2.DfdaemonUpload.DownloadCacheTask:output_type -> dfdaemon.v2.DownloadCacheTaskResponse
+	24, // 32: dfdaemon.v2.DfdaemonUpload.StatCacheTask:output_type -> common.v2.CacheTask
+	23, // 33: dfdaemon.v2.DfdaemonUpload.DeleteCacheTask:output_type -> google.protobuf.Empty
+	3,  // 34: dfdaemon.v2.DfdaemonDownload.DownloadTask:output_type -> dfdaemon.v2.DownloadTaskResponse
+	23, // 35: dfdaemon.v2.DfdaemonDownload.UploadTask:output_type -> google.protobuf.Empty
+	21, // 36: dfdaemon.v2.DfdaemonDownload.StatTask:output_type -> common.v2.Task
+	23, // 37: dfdaemon.v2.DfdaemonDownload.DeleteTask:output_type -> google.protobuf.Empty
+	23, // 38: dfdaemon.v2.DfdaemonDownload.LeaveHost:output_type -> google.protobuf.Empty
+	13, // 39: dfdaemon.v2.DfdaemonDownload.DownloadCacheTask:output_type -> dfdaemon.v2.DownloadCacheTaskResponse
+	24, // 40: dfdaemon.v2.DfdaemonDownload.UploadCacheTask:output_type -> common.v2.CacheTask
+	24, // 41: dfdaemon.v2.DfdaemonDownload.StatCacheTask:output_type -> common.v2.CacheTask
+	23, // 42: dfdaemon.v2.DfdaemonDownload.DeleteCacheTask:output_type -> google.protobuf.Empty
+	28, // [28:43] is the sub-list for method output_type
+	13, // [13:28] is the sub-list for method input_type
+	13, // [13:13] is the sub-list for extension type_name
+	13, // [13:13] is the sub-list for extension extendee
+	0,  // [0:13] is the sub-list for field type_name
 }
 
 func init() { file_pkg_apis_dfdaemon_v2_dfdaemon_proto_init() }
@@ -1075,19 +1662,97 @@ func file_pkg_apis_dfdaemon_v2_dfdaemon_proto_init() {
 				return nil
 			}
 		}
+		file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DownloadCacheTaskRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DownloadCacheTaskStartedResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DownloadCacheTaskResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*UploadCacheTaskRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StatCacheTaskRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteCacheTaskRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[1].OneofWrappers = []interface{}{}
 	file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[3].OneofWrappers = []interface{}{
 		(*DownloadTaskResponse_DownloadTaskStartedResponse)(nil),
 		(*DownloadTaskResponse_DownloadPieceFinishedResponse)(nil),
 	}
+	file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[11].OneofWrappers = []interface{}{}
+	file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[13].OneofWrappers = []interface{}{
+		(*DownloadCacheTaskResponse_DownloadCacheTaskStartedResponse)(nil),
+		(*DownloadCacheTaskResponse_DownloadPieceFinishedResponse)(nil),
+	}
+	file_pkg_apis_dfdaemon_v2_dfdaemon_proto_msgTypes[14].OneofWrappers = []interface{}{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_pkg_apis_dfdaemon_v2_dfdaemon_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   12,
+			NumMessages:   18,
 			NumExtensions: 0,
 			NumServices:   2,
 		},
diff --git a/pkg/apis/dfdaemon/v2/dfdaemon.pb.validate.go b/pkg/apis/dfdaemon/v2/dfdaemon.pb.validate.go
index 5fb1ae9..d1adba0 100644
--- a/pkg/apis/dfdaemon/v2/dfdaemon.pb.validate.go
+++ b/pkg/apis/dfdaemon/v2/dfdaemon.pb.validate.go
@@ -57,9 +57,9 @@ func (m *DownloadTaskRequest) validate(all bool) error {
 
 	var errors []error
 
-	if m.GetDownload() == nil {
+	if m.GetDownloadTask() == nil {
 		err := DownloadTaskRequestValidationError{
-			field:  "Download",
+			field:  "DownloadTask",
 			reason: "value is required",
 		}
 		if !all {
@@ -69,11 +69,11 @@ func (m *DownloadTaskRequest) validate(all bool) error {
 	}
 
 	if all {
-		switch v := interface{}(m.GetDownload()).(type) {
+		switch v := interface{}(m.GetDownloadTask()).(type) {
 		case interface{ ValidateAll() error }:
 			if err := v.ValidateAll(); err != nil {
 				errors = append(errors, DownloadTaskRequestValidationError{
-					field:  "Download",
+					field:  "DownloadTask",
 					reason: "embedded message failed validation",
 					cause:  err,
 				})
@@ -81,16 +81,16 @@ func (m *DownloadTaskRequest) validate(all bool) error {
 		case interface{ Validate() error }:
 			if err := v.Validate(); err != nil {
 				errors = append(errors, DownloadTaskRequestValidationError{
-					field:  "Download",
+					field:  "DownloadTask",
 					reason: "embedded message failed validation",
 					cause:  err,
 				})
 			}
 		}
-	} else if v, ok := interface{}(m.GetDownload()).(interface{ Validate() error }); ok {
+	} else if v, ok := interface{}(m.GetDownloadTask()).(interface{ Validate() error }); ok {
 		if err := v.Validate(); err != nil {
 			return DownloadTaskRequestValidationError{
-				field:  "Download",
+				field:  "DownloadTask",
 				reason: "embedded message failed validation",
 				cause:  err,
 			}
@@ -1605,3 +1605,932 @@ var _ interface {
 	Cause() error
 	ErrorName() string
 } = DeleteTaskRequestValidationError{}
+
+// Validate checks the field values on DownloadCacheTaskRequest with the rules
+// defined in the proto definition for this message. If any rules are
+// violated, the first error encountered is returned, or nil if there are no violations.
+func (m *DownloadCacheTaskRequest) Validate() error {
+	return m.validate(false)
+}
+
+// ValidateAll checks the field values on DownloadCacheTaskRequest with the
+// rules defined in the proto definition for this message. If any rules are
+// violated, the result is a list of violation errors wrapped in
+// DownloadCacheTaskRequestMultiError, or nil if none found.
+func (m *DownloadCacheTaskRequest) ValidateAll() error {
+	return m.validate(true)
+}
+
+func (m *DownloadCacheTaskRequest) validate(all bool) error {
+	if m == nil {
+		return nil
+	}
+
+	var errors []error
+
+	if utf8.RuneCountInString(m.GetHostId()) < 1 {
+		err := DownloadCacheTaskRequestValidationError{
+			field:  "HostId",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if utf8.RuneCountInString(m.GetTaskId()) < 1 {
+		err := DownloadCacheTaskRequestValidationError{
+			field:  "TaskId",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetPieceLength() < 1 {
+		err := DownloadCacheTaskRequestValidationError{
+			field:  "PieceLength",
+			reason: "value must be greater than or equal to 1",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if utf8.RuneCountInString(m.GetOutputPath()) < 1 {
+		err := DownloadCacheTaskRequestValidationError{
+			field:  "OutputPath",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.Tag != nil {
+		// no validation rules for Tag
+	}
+
+	if m.Application != nil {
+		// no validation rules for Application
+	}
+
+	if m.Timeout != nil {
+
+		if all {
+			switch v := interface{}(m.GetTimeout()).(type) {
+			case interface{ ValidateAll() error }:
+				if err := v.ValidateAll(); err != nil {
+					errors = append(errors, DownloadCacheTaskRequestValidationError{
+						field:  "Timeout",
+						reason: "embedded message failed validation",
+						cause:  err,
+					})
+				}
+			case interface{ Validate() error }:
+				if err := v.Validate(); err != nil {
+					errors = append(errors, DownloadCacheTaskRequestValidationError{
+						field:  "Timeout",
+						reason: "embedded message failed validation",
+						cause:  err,
+					})
+				}
+			}
+		} else if v, ok := interface{}(m.GetTimeout()).(interface{ Validate() error }); ok {
+			if err := v.Validate(); err != nil {
+				return DownloadCacheTaskRequestValidationError{
+					field:  "Timeout",
+					reason: "embedded message failed validation",
+					cause:  err,
+				}
+			}
+		}
+
+	}
+
+	if len(errors) > 0 {
+		return DownloadCacheTaskRequestMultiError(errors)
+	}
+
+	return nil
+}
+
+// DownloadCacheTaskRequestMultiError is an error wrapping multiple validation
+// errors returned by DownloadCacheTaskRequest.ValidateAll() if the designated
+// constraints aren't met.
+type DownloadCacheTaskRequestMultiError []error
+
+// Error returns a concatenation of all the error messages it wraps.
+func (m DownloadCacheTaskRequestMultiError) Error() string {
+	var msgs []string
+	for _, err := range m {
+		msgs = append(msgs, err.Error())
+	}
+	return strings.Join(msgs, "; ")
+}
+
+// AllErrors returns a list of validation violation errors.
+func (m DownloadCacheTaskRequestMultiError) AllErrors() []error { return m }
+
+// DownloadCacheTaskRequestValidationError is the validation error returned by
+// DownloadCacheTaskRequest.Validate if the designated constraints aren't met.
+type DownloadCacheTaskRequestValidationError struct {
+	field  string
+	reason string
+	cause  error
+	key    bool
+}
+
+// Field function returns field value.
+func (e DownloadCacheTaskRequestValidationError) Field() string { return e.field }
+
+// Reason function returns reason value.
+func (e DownloadCacheTaskRequestValidationError) Reason() string { return e.reason }
+
+// Cause function returns cause value.
+func (e DownloadCacheTaskRequestValidationError) Cause() error { return e.cause }
+
+// Key function returns key value.
+func (e DownloadCacheTaskRequestValidationError) Key() bool { return e.key }
+
+// ErrorName returns error name.
+func (e DownloadCacheTaskRequestValidationError) ErrorName() string {
+	return "DownloadCacheTaskRequestValidationError"
+}
+
+// Error satisfies the builtin error interface
+func (e DownloadCacheTaskRequestValidationError) Error() string {
+	cause := ""
+	if e.cause != nil {
+		cause = fmt.Sprintf(" | caused by: %v", e.cause)
+	}
+
+	key := ""
+	if e.key {
+		key = "key for "
+	}
+
+	return fmt.Sprintf(
+		"invalid %sDownloadCacheTaskRequest.%s: %s%s",
+		key,
+		e.field,
+		e.reason,
+		cause)
+}
+
+var _ error = DownloadCacheTaskRequestValidationError{}
+
+var _ interface {
+	Field() string
+	Reason() string
+	Key() bool
+	Cause() error
+	ErrorName() string
+} = DownloadCacheTaskRequestValidationError{}
+
+// Validate checks the field values on DownloadCacheTaskStartedResponse with
+// the rules defined in the proto definition for this message. If any rules
+// are violated, the first error encountered is returned, or nil if there are
+// no violations.
+func (m *DownloadCacheTaskStartedResponse) Validate() error {
+	return m.validate(false)
+}
+
+// ValidateAll checks the field values on DownloadCacheTaskStartedResponse with
+// the rules defined in the proto definition for this message. If any rules
+// are violated, the result is a list of violation errors wrapped in
+// DownloadCacheTaskStartedResponseMultiError, or nil if none found.
+func (m *DownloadCacheTaskStartedResponse) ValidateAll() error {
+	return m.validate(true)
+}
+
+func (m *DownloadCacheTaskStartedResponse) validate(all bool) error {
+	if m == nil {
+		return nil
+	}
+
+	var errors []error
+
+	if len(errors) > 0 {
+		return DownloadCacheTaskStartedResponseMultiError(errors)
+	}
+
+	return nil
+}
+
+// DownloadCacheTaskStartedResponseMultiError is an error wrapping multiple
+// validation errors returned by
+// DownloadCacheTaskStartedResponse.ValidateAll() if the designated
+// constraints aren't met.
+type DownloadCacheTaskStartedResponseMultiError []error
+
+// Error returns a concatenation of all the error messages it wraps.
+func (m DownloadCacheTaskStartedResponseMultiError) Error() string {
+	var msgs []string
+	for _, err := range m {
+		msgs = append(msgs, err.Error())
+	}
+	return strings.Join(msgs, "; ")
+}
+
+// AllErrors returns a list of validation violation errors.
+func (m DownloadCacheTaskStartedResponseMultiError) AllErrors() []error { return m }
+
+// DownloadCacheTaskStartedResponseValidationError is the validation error
+// returned by DownloadCacheTaskStartedResponse.Validate if the designated
+// constraints aren't met.
+type DownloadCacheTaskStartedResponseValidationError struct {
+	field  string
+	reason string
+	cause  error
+	key    bool
+}
+
+// Field function returns field value.
+func (e DownloadCacheTaskStartedResponseValidationError) Field() string { return e.field }
+
+// Reason function returns reason value.
+func (e DownloadCacheTaskStartedResponseValidationError) Reason() string { return e.reason }
+
+// Cause function returns cause value.
+func (e DownloadCacheTaskStartedResponseValidationError) Cause() error { return e.cause }
+
+// Key function returns key value.
+func (e DownloadCacheTaskStartedResponseValidationError) Key() bool { return e.key }
+
+// ErrorName returns error name.
+func (e DownloadCacheTaskStartedResponseValidationError) ErrorName() string {
+	return "DownloadCacheTaskStartedResponseValidationError"
+}
+
+// Error satisfies the builtin error interface
+func (e DownloadCacheTaskStartedResponseValidationError) Error() string {
+	cause := ""
+	if e.cause != nil {
+		cause = fmt.Sprintf(" | caused by: %v", e.cause)
+	}
+
+	key := ""
+	if e.key {
+		key = "key for "
+	}
+
+	return fmt.Sprintf(
+		"invalid %sDownloadCacheTaskStartedResponse.%s: %s%s",
+		key,
+		e.field,
+		e.reason,
+		cause)
+}
+
+var _ error = DownloadCacheTaskStartedResponseValidationError{}
+
+var _ interface {
+	Field() string
+	Reason() string
+	Key() bool
+	Cause() error
+	ErrorName() string
+} = DownloadCacheTaskStartedResponseValidationError{}
+
+// Validate checks the field values on DownloadCacheTaskResponse with the rules
+// defined in the proto definition for this message. If any rules are
+// violated, the first error encountered is returned, or nil if there are no violations.
+func (m *DownloadCacheTaskResponse) Validate() error {
+	return m.validate(false)
+}
+
+// ValidateAll checks the field values on DownloadCacheTaskResponse with the
+// rules defined in the proto definition for this message. If any rules are
+// violated, the result is a list of violation errors wrapped in
+// DownloadCacheTaskResponseMultiError, or nil if none found.
+func (m *DownloadCacheTaskResponse) ValidateAll() error {
+	return m.validate(true)
+}
+
+func (m *DownloadCacheTaskResponse) validate(all bool) error {
+	if m == nil {
+		return nil
+	}
+
+	var errors []error
+
+	if utf8.RuneCountInString(m.GetHostId()) < 1 {
+		err := DownloadCacheTaskResponseValidationError{
+			field:  "HostId",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if utf8.RuneCountInString(m.GetTaskId()) < 1 {
+		err := DownloadCacheTaskResponseValidationError{
+			field:  "TaskId",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if utf8.RuneCountInString(m.GetPeerId()) < 1 {
+		err := DownloadCacheTaskResponseValidationError{
+			field:  "PeerId",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	oneofResponsePresent := false
+	switch v := m.Response.(type) {
+	case *DownloadCacheTaskResponse_DownloadCacheTaskStartedResponse:
+		if v == nil {
+			err := DownloadCacheTaskResponseValidationError{
+				field:  "Response",
+				reason: "oneof value cannot be a typed-nil",
+			}
+			if !all {
+				return err
+			}
+			errors = append(errors, err)
+		}
+		oneofResponsePresent = true
+
+		if all {
+			switch v := interface{}(m.GetDownloadCacheTaskStartedResponse()).(type) {
+			case interface{ ValidateAll() error }:
+				if err := v.ValidateAll(); err != nil {
+					errors = append(errors, DownloadCacheTaskResponseValidationError{
+						field:  "DownloadCacheTaskStartedResponse",
+						reason: "embedded message failed validation",
+						cause:  err,
+					})
+				}
+			case interface{ Validate() error }:
+				if err := v.Validate(); err != nil {
+					errors = append(errors, DownloadCacheTaskResponseValidationError{
+						field:  "DownloadCacheTaskStartedResponse",
+						reason: "embedded message failed validation",
+						cause:  err,
+					})
+				}
+			}
+		} else if v, ok := interface{}(m.GetDownloadCacheTaskStartedResponse()).(interface{ Validate() error }); ok {
+			if err := v.Validate(); err != nil {
+				return DownloadCacheTaskResponseValidationError{
+					field:  "DownloadCacheTaskStartedResponse",
+					reason: "embedded message failed validation",
+					cause:  err,
+				}
+			}
+		}
+
+	case *DownloadCacheTaskResponse_DownloadPieceFinishedResponse:
+		if v == nil {
+			err := DownloadCacheTaskResponseValidationError{
+				field:  "Response",
+				reason: "oneof value cannot be a typed-nil",
+			}
+			if !all {
+				return err
+			}
+			errors = append(errors, err)
+		}
+		oneofResponsePresent = true
+
+		if all {
+			switch v := interface{}(m.GetDownloadPieceFinishedResponse()).(type) {
+			case interface{ ValidateAll() error }:
+				if err := v.ValidateAll(); err != nil {
+					errors = append(errors, DownloadCacheTaskResponseValidationError{
+						field:  "DownloadPieceFinishedResponse",
+						reason: "embedded message failed validation",
+						cause:  err,
+					})
+				}
+			case interface{ Validate() error }:
+				if err := v.Validate(); err != nil {
+					errors = append(errors, DownloadCacheTaskResponseValidationError{
+						field:  "DownloadPieceFinishedResponse",
+						reason: "embedded message failed validation",
+						cause:  err,
+					})
+				}
+			}
+		} else if v, ok := interface{}(m.GetDownloadPieceFinishedResponse()).(interface{ Validate() error }); ok {
+			if err := v.Validate(); err != nil {
+				return DownloadCacheTaskResponseValidationError{
+					field:  "DownloadPieceFinishedResponse",
+					reason: "embedded message failed validation",
+					cause:  err,
+				}
+			}
+		}
+
+	default:
+		_ = v // ensures v is used
+	}
+	if !oneofResponsePresent {
+		err := DownloadCacheTaskResponseValidationError{
+			field:  "Response",
+			reason: "value is required",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if len(errors) > 0 {
+		return DownloadCacheTaskResponseMultiError(errors)
+	}
+
+	return nil
+}
+
+// DownloadCacheTaskResponseMultiError is an error wrapping multiple validation
+// errors returned by DownloadCacheTaskResponse.ValidateAll() if the
+// designated constraints aren't met.
+type DownloadCacheTaskResponseMultiError []error
+
+// Error returns a concatenation of all the error messages it wraps.
+func (m DownloadCacheTaskResponseMultiError) Error() string {
+	var msgs []string
+	for _, err := range m {
+		msgs = append(msgs, err.Error())
+	}
+	return strings.Join(msgs, "; ")
+}
+
+// AllErrors returns a list of validation violation errors.
+func (m DownloadCacheTaskResponseMultiError) AllErrors() []error { return m }
+
+// DownloadCacheTaskResponseValidationError is the validation error returned by
+// DownloadCacheTaskResponse.Validate if the designated constraints aren't met.
+type DownloadCacheTaskResponseValidationError struct {
+	field  string
+	reason string
+	cause  error
+	key    bool
+}
+
+// Field function returns field value.
+func (e DownloadCacheTaskResponseValidationError) Field() string { return e.field }
+
+// Reason function returns reason value.
+func (e DownloadCacheTaskResponseValidationError) Reason() string { return e.reason }
+
+// Cause function returns cause value.
+func (e DownloadCacheTaskResponseValidationError) Cause() error { return e.cause }
+
+// Key function returns key value.
+func (e DownloadCacheTaskResponseValidationError) Key() bool { return e.key }
+
+// ErrorName returns error name.
+func (e DownloadCacheTaskResponseValidationError) ErrorName() string {
+	return "DownloadCacheTaskResponseValidationError"
+}
+
+// Error satisfies the builtin error interface
+func (e DownloadCacheTaskResponseValidationError) Error() string {
+	cause := ""
+	if e.cause != nil {
+		cause = fmt.Sprintf(" | caused by: %v", e.cause)
+	}
+
+	key := ""
+	if e.key {
+		key = "key for "
+	}
+
+	return fmt.Sprintf(
+		"invalid %sDownloadCacheTaskResponse.%s: %s%s",
+		key,
+		e.field,
+		e.reason,
+		cause)
+}
+
+var _ error = DownloadCacheTaskResponseValidationError{}
+
+var _ interface {
+	Field() string
+	Reason() string
+	Key() bool
+	Cause() error
+	ErrorName() string
+} = DownloadCacheTaskResponseValidationError{}
+
+// Validate checks the field values on UploadCacheTaskRequest with the rules
+// defined in the proto definition for this message. If any rules are
+// violated, the first error encountered is returned, or nil if there are no violations.
+func (m *UploadCacheTaskRequest) Validate() error {
+	return m.validate(false)
+}
+
+// ValidateAll checks the field values on UploadCacheTaskRequest with the rules
+// defined in the proto definition for this message. If any rules are
+// violated, the result is a list of violation errors wrapped in
+// UploadCacheTaskRequestMultiError, or nil if none found.
+func (m *UploadCacheTaskRequest) ValidateAll() error {
+	return m.validate(true)
+}
+
+func (m *UploadCacheTaskRequest) validate(all bool) error {
+	if m == nil {
+		return nil
+	}
+
+	var errors []error
+
+	if utf8.RuneCountInString(m.GetPath()) < 1 {
+		err := UploadCacheTaskRequestValidationError{
+			field:  "Path",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetPersistentReplicaCount() < 1 {
+		err := UploadCacheTaskRequestValidationError{
+			field:  "PersistentReplicaCount",
+			reason: "value must be greater than or equal to 1",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.GetPieceLength() < 1 {
+		err := UploadCacheTaskRequestValidationError{
+			field:  "PieceLength",
+			reason: "value must be greater than or equal to 1",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if m.Tag != nil {
+		// no validation rules for Tag
+	}
+
+	if m.Application != nil {
+		// no validation rules for Application
+	}
+
+	if m.Timeout != nil {
+
+		if all {
+			switch v := interface{}(m.GetTimeout()).(type) {
+			case interface{ ValidateAll() error }:
+				if err := v.ValidateAll(); err != nil {
+					errors = append(errors, UploadCacheTaskRequestValidationError{
+						field:  "Timeout",
+						reason: "embedded message failed validation",
+						cause:  err,
+					})
+				}
+			case interface{ Validate() error }:
+				if err := v.Validate(); err != nil {
+					errors = append(errors, UploadCacheTaskRequestValidationError{
+						field:  "Timeout",
+						reason: "embedded message failed validation",
+						cause:  err,
+					})
+				}
+			}
+		} else if v, ok := interface{}(m.GetTimeout()).(interface{ Validate() error }); ok {
+			if err := v.Validate(); err != nil {
+				return UploadCacheTaskRequestValidationError{
+					field:  "Timeout",
+					reason: "embedded message failed validation",
+					cause:  err,
+				}
+			}
+		}
+
+	}
+
+	if len(errors) > 0 {
+		return UploadCacheTaskRequestMultiError(errors)
+	}
+
+	return nil
+}
+
+// UploadCacheTaskRequestMultiError is an error wrapping multiple validation
+// errors returned by UploadCacheTaskRequest.ValidateAll() if the designated
+// constraints aren't met.
+type UploadCacheTaskRequestMultiError []error
+
+// Error returns a concatenation of all the error messages it wraps.
+func (m UploadCacheTaskRequestMultiError) Error() string {
+	var msgs []string
+	for _, err := range m {
+		msgs = append(msgs, err.Error())
+	}
+	return strings.Join(msgs, "; ")
+}
+
+// AllErrors returns a list of validation violation errors.
+func (m UploadCacheTaskRequestMultiError) AllErrors() []error { return m }
+
+// UploadCacheTaskRequestValidationError is the validation error returned by
+// UploadCacheTaskRequest.Validate if the designated constraints aren't met.
+type UploadCacheTaskRequestValidationError struct {
+	field  string
+	reason string
+	cause  error
+	key    bool
+}
+
+// Field function returns field value.
+func (e UploadCacheTaskRequestValidationError) Field() string { return e.field }
+
+// Reason function returns reason value.
+func (e UploadCacheTaskRequestValidationError) Reason() string { return e.reason }
+
+// Cause function returns cause value.
+func (e UploadCacheTaskRequestValidationError) Cause() error { return e.cause }
+
+// Key function returns key value.
+func (e UploadCacheTaskRequestValidationError) Key() bool { return e.key }
+
+// ErrorName returns error name.
+func (e UploadCacheTaskRequestValidationError) ErrorName() string {
+	return "UploadCacheTaskRequestValidationError"
+}
+
+// Error satisfies the builtin error interface
+func (e UploadCacheTaskRequestValidationError) Error() string {
+	cause := ""
+	if e.cause != nil {
+		cause = fmt.Sprintf(" | caused by: %v", e.cause)
+	}
+
+	key := ""
+	if e.key {
+		key = "key for "
+	}
+
+	return fmt.Sprintf(
+		"invalid %sUploadCacheTaskRequest.%s: %s%s",
+		key,
+		e.field,
+		e.reason,
+		cause)
+}
+
+var _ error = UploadCacheTaskRequestValidationError{}
+
+var _ interface {
+	Field() string
+	Reason() string
+	Key() bool
+	Cause() error
+	ErrorName() string
+} = UploadCacheTaskRequestValidationError{}
+
+// Validate checks the field values on StatCacheTaskRequest with the rules
+// defined in the proto definition for this message. If any rules are
+// violated, the first error encountered is returned, or nil if there are no violations.
+func (m *StatCacheTaskRequest) Validate() error {
+	return m.validate(false)
+}
+
+// ValidateAll checks the field values on StatCacheTaskRequest with the rules
+// defined in the proto definition for this message. If any rules are
+// violated, the result is a list of violation errors wrapped in
+// StatCacheTaskRequestMultiError, or nil if none found.
+func (m *StatCacheTaskRequest) ValidateAll() error {
+	return m.validate(true)
+}
+
+func (m *StatCacheTaskRequest) validate(all bool) error {
+	if m == nil {
+		return nil
+	}
+
+	var errors []error
+
+	if utf8.RuneCountInString(m.GetTaskId()) < 1 {
+		err := StatCacheTaskRequestValidationError{
+			field:  "TaskId",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if len(errors) > 0 {
+		return StatCacheTaskRequestMultiError(errors)
+	}
+
+	return nil
+}
+
+// StatCacheTaskRequestMultiError is an error wrapping multiple validation
+// errors returned by StatCacheTaskRequest.ValidateAll() if the designated
+// constraints aren't met.
+type StatCacheTaskRequestMultiError []error
+
+// Error returns a concatenation of all the error messages it wraps.
+func (m StatCacheTaskRequestMultiError) Error() string {
+	var msgs []string
+	for _, err := range m {
+		msgs = append(msgs, err.Error())
+	}
+	return strings.Join(msgs, "; ")
+}
+
+// AllErrors returns a list of validation violation errors.
+func (m StatCacheTaskRequestMultiError) AllErrors() []error { return m }
+
+// StatCacheTaskRequestValidationError is the validation error returned by
+// StatCacheTaskRequest.Validate if the designated constraints aren't met.
+type StatCacheTaskRequestValidationError struct {
+	field  string
+	reason string
+	cause  error
+	key    bool
+}
+
+// Field function returns field value.
+func (e StatCacheTaskRequestValidationError) Field() string { return e.field }
+
+// Reason function returns reason value.
+func (e StatCacheTaskRequestValidationError) Reason() string { return e.reason }
+
+// Cause function returns cause value.
+func (e StatCacheTaskRequestValidationError) Cause() error { return e.cause }
+
+// Key function returns key value.
+func (e StatCacheTaskRequestValidationError) Key() bool { return e.key }
+
+// ErrorName returns error name.
+func (e StatCacheTaskRequestValidationError) ErrorName() string {
+	return "StatCacheTaskRequestValidationError"
+}
+
+// Error satisfies the builtin error interface
+func (e StatCacheTaskRequestValidationError) Error() string {
+	cause := ""
+	if e.cause != nil {
+		cause = fmt.Sprintf(" | caused by: %v", e.cause)
+	}
+
+	key := ""
+	if e.key {
+		key = "key for "
+	}
+
+	return fmt.Sprintf(
+		"invalid %sStatCacheTaskRequest.%s: %s%s",
+		key,
+		e.field,
+		e.reason,
+		cause)
+}
+
+var _ error = StatCacheTaskRequestValidationError{}
+
+var _ interface {
+	Field() string
+	Reason() string
+	Key() bool
+	Cause() error
+	ErrorName() string
+} = StatCacheTaskRequestValidationError{}
+
+// Validate checks the field values on DeleteCacheTaskRequest with the rules
+// defined in the proto definition for this message. If any rules are
+// violated, the first error encountered is returned, or nil if there are no violations.
+func (m *DeleteCacheTaskRequest) Validate() error {
+	return m.validate(false)
+}
+
+// ValidateAll checks the field values on DeleteCacheTaskRequest with the rules
+// defined in the proto definition for this message. If any rules are
+// violated, the result is a list of violation errors wrapped in
+// DeleteCacheTaskRequestMultiError, or nil if none found.
+func (m *DeleteCacheTaskRequest) ValidateAll() error {
+	return m.validate(true)
+}
+
+func (m *DeleteCacheTaskRequest) validate(all bool) error {
+	if m == nil {
+		return nil
+	}
+
+	var errors []error
+
+	if utf8.RuneCountInString(m.GetTaskId()) < 1 {
+		err := DeleteCacheTaskRequestValidationError{
+			field:  "TaskId",
+			reason: "value length must be at least 1 runes",
+		}
+		if !all {
+			return err
+		}
+		errors = append(errors, err)
+	}
+
+	if len(errors) > 0 {
+		return DeleteCacheTaskRequestMultiError(errors)
+	}
+
+	return nil
+}
+
+// DeleteCacheTaskRequestMultiError is an error wrapping multiple validation
+// errors returned by DeleteCacheTaskRequest.ValidateAll() if the designated
+// constraints aren't met.
+type DeleteCacheTaskRequestMultiError []error
+
+// Error returns a concatenation of all the error messages it wraps.
+func (m DeleteCacheTaskRequestMultiError) Error() string {
+	var msgs []string
+	for _, err := range m {
+		msgs = append(msgs, err.Error())
+	}
+	return strings.Join(msgs, "; ")
+}
+
+// AllErrors returns a list of validation violation errors.
+func (m DeleteCacheTaskRequestMultiError) AllErrors() []error { return m }
+
+// DeleteCacheTaskRequestValidationError is the validation error returned by
+// DeleteCacheTaskRequest.Validate if the designated constraints aren't met.
+type DeleteCacheTaskRequestValidationError struct {
+	field  string
+	reason string
+	cause  error
+	key    bool
+}
+
+// Field function returns field value.
+func (e DeleteCacheTaskRequestValidationError) Field() string { return e.field }
+
+// Reason function returns reason value.
+func (e DeleteCacheTaskRequestValidationError) Reason() string { return e.reason }
+
+// Cause function returns cause value.
+func (e DeleteCacheTaskRequestValidationError) Cause() error { return e.cause }
+
+// Key function returns key value.
+func (e DeleteCacheTaskRequestValidationError) Key() bool { return e.key }
+
+// ErrorName returns error name.
+func (e DeleteCacheTaskRequestValidationError) ErrorName() string {
+	return "DeleteCacheTaskRequestValidationError"
+}
+
+// Error satisfies the builtin error interface
+func (e DeleteCacheTaskRequestValidationError) Error() string {
+	cause := ""
+	if e.cause != nil {
+		cause = fmt.Sprintf(" | caused by: %v", e.cause)
+	}
+
+	key := ""
+	if e.key {
+		key = "key for "
+	}
+
+	return fmt.Sprintf(
+		"invalid %sDeleteCacheTaskRequest.%s: %s%s",
+		key,
+		e.field,
+		e.reason,
+		cause)
+}
+
+var _ error = DeleteCacheTaskRequestValidationError{}
+
+var _ interface {
+	Field() string
+	Reason() string
+	Key() bool
+	Cause() error
+	ErrorName() string
+} = DeleteCacheTaskRequestValidationError{}
diff --git a/pkg/apis/dfdaemon/v2/dfdaemon.proto b/pkg/apis/dfdaemon/v2/dfdaemon.proto
index 0e63bcc..d2cc4dc 100644
--- a/pkg/apis/dfdaemon/v2/dfdaemon.proto
+++ b/pkg/apis/dfdaemon/v2/dfdaemon.proto
@@ -19,6 +19,7 @@ syntax = "proto3";
 package dfdaemon.v2;
 
 import "pkg/apis/common/v2/common.proto";
+import "google/protobuf/duration.proto";
 import "google/protobuf/empty.proto";
 import "validate/validate.proto";
 
@@ -27,7 +28,7 @@ option go_package = "d7y.io/api/v2/pkg/apis/dfdaemon/v2;dfdaemon";
 // DownloadTaskRequest represents request of DownloadTask.
 message DownloadTaskRequest {
   // Download information.
-  common.v2.Download download = 1 [(validate.rules).message.required = true];
+  common.v2.DownloadTask download_task = 1 [(validate.rules).message.required = true];
 }
 
 // DownloadTaskStartedResponse represents task download started response of DownloadTaskResponse.
@@ -106,18 +107,6 @@ message DownloadPieceResponse {
   common.v2.Piece piece = 1 [(validate.rules).message.required = true];
 }
 
-// DfdaemonUpload represents dfdaemon upload service.
-service DfdaemonUpload {
-  // DownloadTask downloads task from p2p network.
-  rpc DownloadTask(DownloadTaskRequest) returns(stream DownloadTaskResponse);
-
-  // SyncPieces syncs piece metadatas from remote peer.
-  rpc SyncPieces(SyncPiecesRequest) returns(stream SyncPiecesResponse);
-
-  // DownloadPiece downloads piece from the remote peer.
-  rpc DownloadPiece(DownloadPieceRequest)returns(DownloadPieceResponse);
-}
-
 // UploadTaskRequest represents request of UploadTask.
 message UploadTaskRequest {
   // Task metadata.
@@ -136,6 +125,93 @@ message DeleteTaskRequest {
   string task_id = 1 [(validate.rules).string.min_len = 1];
 }
 
+// DownloadCacheTaskRequest represents request of DownloadCacheTask.
+message DownloadCacheTaskRequest {
+  // Host id.
+  string host_id = 1 [(validate.rules).string.min_len = 1];
+  // Task id.
+  string task_id = 2 [(validate.rules).string.min_len = 1];
+  // Tag is used to distinguish different cache tasks.
+  optional string tag = 3;
+  // Application of task.
+  optional string application = 4;
+  // Task piece length.
+  uint64 piece_length = 5 [(validate.rules).uint64.gte = 1];
+  // File path to be exported.
+  string output_path = 6 [(validate.rules).string = {min_len: 1}];
+  // Download timeout.
+  optional google.protobuf.Duration timeout = 7;
+}
+
+// DownloadCacheTaskStartedResponse represents task download started response of DownloadCacheTaskResponse.
+message DownloadCacheTaskStartedResponse {}
+
+// DownloadCacheTaskResponse represents response of DownloadCacheTask.
+message DownloadCacheTaskResponse {
+  // Host id.
+  string host_id = 1 [(validate.rules).string.min_len = 1];
+  // Task id.
+  string task_id = 2 [(validate.rules).string.min_len = 1];
+  // Peer id.
+  string peer_id = 3 [(validate.rules).string.min_len = 1];
+
+  oneof response {
+    option (validate.required) = true;
+
+    DownloadCacheTaskStartedResponse download_cache_task_started_response = 4;
+    DownloadPieceFinishedResponse download_piece_finished_response = 5;
+  }
+}
+
+// UploadCacheTaskRequest represents request of UploadCacheTask.
+message UploadCacheTaskRequest {
+  // Upload file path of cache task.
+  string path = 1 [(validate.rules).string = {min_len: 1}];
+  // Replica count of the persistent cache task.
+  uint64 persistent_replica_count = 2 [(validate.rules).uint64.gte = 1];
+  // Tag is used to distinguish different cache tasks.
+  optional string tag = 3;
+  // Application of task.
+  optional string application = 4;
+  // Task piece length.
+  uint64 piece_length = 5 [(validate.rules).uint64.gte = 1];
+  // Download timeout.
+  optional google.protobuf.Duration timeout = 6;
+}
+
+// StatCacheTaskRequest represents request of StatCacheTask.
+message StatCacheTaskRequest {
+  // Task id.
+  string task_id = 1 [(validate.rules).string.min_len = 1];
+}
+
+// DeleteCacheTaskRequest represents request of DeleteCacheTask.
+message DeleteCacheTaskRequest {
+  // Task id.
+  string task_id = 1 [(validate.rules).string.min_len = 1];
+}
+
+// DfdaemonUpload represents dfdaemon upload service.
+service DfdaemonUpload {
+  // DownloadTask downloads task from p2p network.
+  rpc DownloadTask(DownloadTaskRequest) returns(stream DownloadTaskResponse);
+
+  // SyncPieces syncs piece metadatas from remote peer.
+  rpc SyncPieces(SyncPiecesRequest) returns(stream SyncPiecesResponse);
+
+  // DownloadPiece downloads piece from the remote peer.
+  rpc DownloadPiece(DownloadPieceRequest)returns(DownloadPieceResponse);
+
+  // DownloadCacheTask downloads cache task from p2p network.
+  rpc DownloadCacheTask(DownloadCacheTaskRequest) returns(stream DownloadCacheTaskResponse);
+
+  // StatCacheTask stats cache task information.
+  rpc StatCacheTask(StatCacheTaskRequest) returns(common.v2.CacheTask);
+
+  // DeleteCacheTask deletes cache task from p2p network.
+  rpc DeleteCacheTask(DeleteCacheTaskRequest) returns(google.protobuf.Empty);
+}
+
 // DfdaemonDownload represents dfdaemon download service.
 service DfdaemonDownload {
   // DownloadTask downloads task from p2p network.
@@ -152,4 +228,16 @@ service DfdaemonDownload {
 
   // LeaveHost releases host in scheduler.
   rpc LeaveHost(google.protobuf.Empty)returns(google.protobuf.Empty);
+
+  // DownloadCacheTask downloads cache task from p2p network.
+  rpc DownloadCacheTask(DownloadCacheTaskRequest) returns(stream DownloadCacheTaskResponse);
+
+  // UploadCacheTask uploads cache task to p2p network.
+  rpc UploadCacheTask(UploadCacheTaskRequest) returns(common.v2.CacheTask);
+
+  // StatCacheTask stats cache task information.
+  rpc StatCacheTask(StatCacheTaskRequest) returns(common.v2.CacheTask);
+
+  // DeleteCacheTask deletes cache task from p2p network.
+  rpc DeleteCacheTask(DeleteCacheTaskRequest) returns(google.protobuf.Empty);
 }
diff --git a/pkg/apis/dfdaemon/v2/dfdaemon_grpc.pb.go b/pkg/apis/dfdaemon/v2/dfdaemon_grpc.pb.go
index 3910471..72b8347 100644
--- a/pkg/apis/dfdaemon/v2/dfdaemon_grpc.pb.go
+++ b/pkg/apis/dfdaemon/v2/dfdaemon_grpc.pb.go
@@ -30,6 +30,12 @@ type DfdaemonUploadClient interface {
 	SyncPieces(ctx context.Context, in *SyncPiecesRequest, opts ...grpc.CallOption) (DfdaemonUpload_SyncPiecesClient, error)
 	// DownloadPiece downloads piece from the remote peer.
 	DownloadPiece(ctx context.Context, in *DownloadPieceRequest, opts ...grpc.CallOption) (*DownloadPieceResponse, error)
+	// DownloadCacheTask downloads cache task from p2p network.
+	DownloadCacheTask(ctx context.Context, in *DownloadCacheTaskRequest, opts ...grpc.CallOption) (DfdaemonUpload_DownloadCacheTaskClient, error)
+	// StatCacheTask stats cache task information.
+	StatCacheTask(ctx context.Context, in *StatCacheTaskRequest, opts ...grpc.CallOption) (*v2.CacheTask, error)
+	// DeleteCacheTask deletes cache task from p2p network.
+	DeleteCacheTask(ctx context.Context, in *DeleteCacheTaskRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 }
 
 type dfdaemonUploadClient struct {
@@ -113,6 +119,56 @@ func (c *dfdaemonUploadClient) DownloadPiece(ctx context.Context, in *DownloadPi
 	return out, nil
 }
 
+func (c *dfdaemonUploadClient) DownloadCacheTask(ctx context.Context, in *DownloadCacheTaskRequest, opts ...grpc.CallOption) (DfdaemonUpload_DownloadCacheTaskClient, error) {
+	stream, err := c.cc.NewStream(ctx, &DfdaemonUpload_ServiceDesc.Streams[2], "/dfdaemon.v2.DfdaemonUpload/DownloadCacheTask", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &dfdaemonUploadDownloadCacheTaskClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type DfdaemonUpload_DownloadCacheTaskClient interface {
+	Recv() (*DownloadCacheTaskResponse, error)
+	grpc.ClientStream
+}
+
+type dfdaemonUploadDownloadCacheTaskClient struct {
+	grpc.ClientStream
+}
+
+func (x *dfdaemonUploadDownloadCacheTaskClient) Recv() (*DownloadCacheTaskResponse, error) {
+	m := new(DownloadCacheTaskResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *dfdaemonUploadClient) StatCacheTask(ctx context.Context, in *StatCacheTaskRequest, opts ...grpc.CallOption) (*v2.CacheTask, error) {
+	out := new(v2.CacheTask)
+	err := c.cc.Invoke(ctx, "/dfdaemon.v2.DfdaemonUpload/StatCacheTask", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *dfdaemonUploadClient) DeleteCacheTask(ctx context.Context, in *DeleteCacheTaskRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, "/dfdaemon.v2.DfdaemonUpload/DeleteCacheTask", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // DfdaemonUploadServer is the server API for DfdaemonUpload service.
 // All implementations should embed UnimplementedDfdaemonUploadServer
 // for forward compatibility
@@ -123,6 +179,12 @@ type DfdaemonUploadServer interface {
 	SyncPieces(*SyncPiecesRequest, DfdaemonUpload_SyncPiecesServer) error
 	// DownloadPiece downloads piece from the remote peer.
 	DownloadPiece(context.Context, *DownloadPieceRequest) (*DownloadPieceResponse, error)
+	// DownloadCacheTask downloads cache task from p2p network.
+	DownloadCacheTask(*DownloadCacheTaskRequest, DfdaemonUpload_DownloadCacheTaskServer) error
+	// StatCacheTask stats cache task information.
+	StatCacheTask(context.Context, *StatCacheTaskRequest) (*v2.CacheTask, error)
+	// DeleteCacheTask deletes cache task from p2p network.
+	DeleteCacheTask(context.Context, *DeleteCacheTaskRequest) (*emptypb.Empty, error)
 }
 
 // UnimplementedDfdaemonUploadServer should be embedded to have forward compatible implementations.
@@ -138,6 +200,15 @@ func (UnimplementedDfdaemonUploadServer) SyncPieces(*SyncPiecesRequest, Dfdaemon
 func (UnimplementedDfdaemonUploadServer) DownloadPiece(context.Context, *DownloadPieceRequest) (*DownloadPieceResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method DownloadPiece not implemented")
 }
+func (UnimplementedDfdaemonUploadServer) DownloadCacheTask(*DownloadCacheTaskRequest, DfdaemonUpload_DownloadCacheTaskServer) error {
+	return status.Errorf(codes.Unimplemented, "method DownloadCacheTask not implemented")
+}
+func (UnimplementedDfdaemonUploadServer) StatCacheTask(context.Context, *StatCacheTaskRequest) (*v2.CacheTask, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method StatCacheTask not implemented")
+}
+func (UnimplementedDfdaemonUploadServer) DeleteCacheTask(context.Context, *DeleteCacheTaskRequest) (*emptypb.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DeleteCacheTask not implemented")
+}
 
 // UnsafeDfdaemonUploadServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to DfdaemonUploadServer will
@@ -210,6 +281,63 @@ func _DfdaemonUpload_DownloadPiece_Handler(srv interface{}, ctx context.Context,
 	return interceptor(ctx, in, info, handler)
 }
 
+func _DfdaemonUpload_DownloadCacheTask_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(DownloadCacheTaskRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(DfdaemonUploadServer).DownloadCacheTask(m, &dfdaemonUploadDownloadCacheTaskServer{stream})
+}
+
+type DfdaemonUpload_DownloadCacheTaskServer interface {
+	Send(*DownloadCacheTaskResponse) error
+	grpc.ServerStream
+}
+
+type dfdaemonUploadDownloadCacheTaskServer struct {
+	grpc.ServerStream
+}
+
+func (x *dfdaemonUploadDownloadCacheTaskServer) Send(m *DownloadCacheTaskResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _DfdaemonUpload_StatCacheTask_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StatCacheTaskRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DfdaemonUploadServer).StatCacheTask(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/dfdaemon.v2.DfdaemonUpload/StatCacheTask",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DfdaemonUploadServer).StatCacheTask(ctx, req.(*StatCacheTaskRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _DfdaemonUpload_DeleteCacheTask_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteCacheTaskRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DfdaemonUploadServer).DeleteCacheTask(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/dfdaemon.v2.DfdaemonUpload/DeleteCacheTask",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DfdaemonUploadServer).DeleteCacheTask(ctx, req.(*DeleteCacheTaskRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // DfdaemonUpload_ServiceDesc is the grpc.ServiceDesc for DfdaemonUpload service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -221,6 +349,14 @@ var DfdaemonUpload_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "DownloadPiece",
 			Handler:    _DfdaemonUpload_DownloadPiece_Handler,
 		},
+		{
+			MethodName: "StatCacheTask",
+			Handler:    _DfdaemonUpload_StatCacheTask_Handler,
+		},
+		{
+			MethodName: "DeleteCacheTask",
+			Handler:    _DfdaemonUpload_DeleteCacheTask_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
@@ -233,6 +369,11 @@ var DfdaemonUpload_ServiceDesc = grpc.ServiceDesc{
 			Handler:       _DfdaemonUpload_SyncPieces_Handler,
 			ServerStreams: true,
 		},
+		{
+			StreamName:    "DownloadCacheTask",
+			Handler:       _DfdaemonUpload_DownloadCacheTask_Handler,
+			ServerStreams: true,
+		},
 	},
 	Metadata: "pkg/apis/dfdaemon/v2/dfdaemon.proto",
 }
@@ -251,6 +392,14 @@ type DfdaemonDownloadClient interface {
 	DeleteTask(ctx context.Context, in *DeleteTaskRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	// LeaveHost releases host in scheduler.
 	LeaveHost(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	// DownloadCacheTask downloads cache task from p2p network.
+	DownloadCacheTask(ctx context.Context, in *DownloadCacheTaskRequest, opts ...grpc.CallOption) (DfdaemonDownload_DownloadCacheTaskClient, error)
+	// UploadCacheTask uploads cache task to p2p network.
+	UploadCacheTask(ctx context.Context, in *UploadCacheTaskRequest, opts ...grpc.CallOption) (*v2.CacheTask, error)
+	// StatCacheTask stats cache task information.
+	StatCacheTask(ctx context.Context, in *StatCacheTaskRequest, opts ...grpc.CallOption) (*v2.CacheTask, error)
+	// DeleteCacheTask deletes cache task from p2p network.
+	DeleteCacheTask(ctx context.Context, in *DeleteCacheTaskRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 }
 
 type dfdaemonDownloadClient struct {
@@ -329,6 +478,65 @@ func (c *dfdaemonDownloadClient) LeaveHost(ctx context.Context, in *emptypb.Empt
 	return out, nil
 }
 
+func (c *dfdaemonDownloadClient) DownloadCacheTask(ctx context.Context, in *DownloadCacheTaskRequest, opts ...grpc.CallOption) (DfdaemonDownload_DownloadCacheTaskClient, error) {
+	stream, err := c.cc.NewStream(ctx, &DfdaemonDownload_ServiceDesc.Streams[1], "/dfdaemon.v2.DfdaemonDownload/DownloadCacheTask", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &dfdaemonDownloadDownloadCacheTaskClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type DfdaemonDownload_DownloadCacheTaskClient interface {
+	Recv() (*DownloadCacheTaskResponse, error)
+	grpc.ClientStream
+}
+
+type dfdaemonDownloadDownloadCacheTaskClient struct {
+	grpc.ClientStream
+}
+
+func (x *dfdaemonDownloadDownloadCacheTaskClient) Recv() (*DownloadCacheTaskResponse, error) {
+	m := new(DownloadCacheTaskResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *dfdaemonDownloadClient) UploadCacheTask(ctx context.Context, in *UploadCacheTaskRequest, opts ...grpc.CallOption) (*v2.CacheTask, error) {
+	out := new(v2.CacheTask)
+	err := c.cc.Invoke(ctx, "/dfdaemon.v2.DfdaemonDownload/UploadCacheTask", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *dfdaemonDownloadClient) StatCacheTask(ctx context.Context, in *StatCacheTaskRequest, opts ...grpc.CallOption) (*v2.CacheTask, error) {
+	out := new(v2.CacheTask)
+	err := c.cc.Invoke(ctx, "/dfdaemon.v2.DfdaemonDownload/StatCacheTask", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *dfdaemonDownloadClient) DeleteCacheTask(ctx context.Context, in *DeleteCacheTaskRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, "/dfdaemon.v2.DfdaemonDownload/DeleteCacheTask", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // DfdaemonDownloadServer is the server API for DfdaemonDownload service.
 // All implementations should embed UnimplementedDfdaemonDownloadServer
 // for forward compatibility
@@ -343,6 +551,14 @@ type DfdaemonDownloadServer interface {
 	DeleteTask(context.Context, *DeleteTaskRequest) (*emptypb.Empty, error)
 	// LeaveHost releases host in scheduler.
 	LeaveHost(context.Context, *emptypb.Empty) (*emptypb.Empty, error)
+	// DownloadCacheTask downloads cache task from p2p network.
+	DownloadCacheTask(*DownloadCacheTaskRequest, DfdaemonDownload_DownloadCacheTaskServer) error
+	// UploadCacheTask uploads cache task to p2p network.
+	UploadCacheTask(context.Context, *UploadCacheTaskRequest) (*v2.CacheTask, error)
+	// StatCacheTask stats cache task information.
+	StatCacheTask(context.Context, *StatCacheTaskRequest) (*v2.CacheTask, error)
+	// DeleteCacheTask deletes cache task from p2p network.
+	DeleteCacheTask(context.Context, *DeleteCacheTaskRequest) (*emptypb.Empty, error)
 }
 
 // UnimplementedDfdaemonDownloadServer should be embedded to have forward compatible implementations.
@@ -364,6 +580,18 @@ func (UnimplementedDfdaemonDownloadServer) DeleteTask(context.Context, *DeleteTa
 func (UnimplementedDfdaemonDownloadServer) LeaveHost(context.Context, *emptypb.Empty) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method LeaveHost not implemented")
 }
+func (UnimplementedDfdaemonDownloadServer) DownloadCacheTask(*DownloadCacheTaskRequest, DfdaemonDownload_DownloadCacheTaskServer) error {
+	return status.Errorf(codes.Unimplemented, "method DownloadCacheTask not implemented")
+}
+func (UnimplementedDfdaemonDownloadServer) UploadCacheTask(context.Context, *UploadCacheTaskRequest) (*v2.CacheTask, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method UploadCacheTask not implemented")
+}
+func (UnimplementedDfdaemonDownloadServer) StatCacheTask(context.Context, *StatCacheTaskRequest) (*v2.CacheTask, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method StatCacheTask not implemented")
+}
+func (UnimplementedDfdaemonDownloadServer) DeleteCacheTask(context.Context, *DeleteCacheTaskRequest) (*emptypb.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DeleteCacheTask not implemented")
+}
 
 // UnsafeDfdaemonDownloadServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to DfdaemonDownloadServer will
@@ -469,6 +697,81 @@ func _DfdaemonDownload_LeaveHost_Handler(srv interface{}, ctx context.Context, d
 	return interceptor(ctx, in, info, handler)
 }
 
+func _DfdaemonDownload_DownloadCacheTask_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(DownloadCacheTaskRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(DfdaemonDownloadServer).DownloadCacheTask(m, &dfdaemonDownloadDownloadCacheTaskServer{stream})
+}
+
+type DfdaemonDownload_DownloadCacheTaskServer interface {
+	Send(*DownloadCacheTaskResponse) error
+	grpc.ServerStream
+}
+
+type dfdaemonDownloadDownloadCacheTaskServer struct {
+	grpc.ServerStream
+}
+
+func (x *dfdaemonDownloadDownloadCacheTaskServer) Send(m *DownloadCacheTaskResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _DfdaemonDownload_UploadCacheTask_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(UploadCacheTaskRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DfdaemonDownloadServer).UploadCacheTask(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/dfdaemon.v2.DfdaemonDownload/UploadCacheTask",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DfdaemonDownloadServer).UploadCacheTask(ctx, req.(*UploadCacheTaskRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _DfdaemonDownload_StatCacheTask_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StatCacheTaskRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DfdaemonDownloadServer).StatCacheTask(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/dfdaemon.v2.DfdaemonDownload/StatCacheTask",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DfdaemonDownloadServer).StatCacheTask(ctx, req.(*StatCacheTaskRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _DfdaemonDownload_DeleteCacheTask_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteCacheTaskRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DfdaemonDownloadServer).DeleteCacheTask(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/dfdaemon.v2.DfdaemonDownload/DeleteCacheTask",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DfdaemonDownloadServer).DeleteCacheTask(ctx, req.(*DeleteCacheTaskRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // DfdaemonDownload_ServiceDesc is the grpc.ServiceDesc for DfdaemonDownload service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -492,6 +795,18 @@ var DfdaemonDownload_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "LeaveHost",
 			Handler:    _DfdaemonDownload_LeaveHost_Handler,
 		},
+		{
+			MethodName: "UploadCacheTask",
+			Handler:    _DfdaemonDownload_UploadCacheTask_Handler,
+		},
+		{
+			MethodName: "StatCacheTask",
+			Handler:    _DfdaemonDownload_StatCacheTask_Handler,
+		},
+		{
+			MethodName: "DeleteCacheTask",
+			Handler:    _DfdaemonDownload_DeleteCacheTask_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
@@ -499,6 +814,11 @@ var DfdaemonDownload_ServiceDesc = grpc.ServiceDesc{
 			Handler:       _DfdaemonDownload_DownloadTask_Handler,
 			ServerStreams: true,
 		},
+		{
+			StreamName:    "DownloadCacheTask",
+			Handler:       _DfdaemonDownload_DownloadCacheTask_Handler,
+			ServerStreams: true,
+		},
 	},
 	Metadata: "pkg/apis/dfdaemon/v2/dfdaemon.proto",
 }
diff --git a/pkg/apis/scheduler/v2/scheduler.pb.go b/pkg/apis/scheduler/v2/scheduler.pb.go
index 289bb95..c0943b4 100644
--- a/pkg/apis/scheduler/v2/scheduler.pb.go
+++ b/pkg/apis/scheduler/v2/scheduler.pb.go
@@ -48,7 +48,7 @@ type RegisterPeerRequest struct {
 	unknownFields protoimpl.UnknownFields
 
 	// Download information.
-	Download *v2.Download `protobuf:"bytes,1,opt,name=download,proto3" json:"download,omitempty"`
+	DownloadTask *v2.DownloadTask `protobuf:"bytes,1,opt,name=download_task,json=downloadTask,proto3" json:"download_task,omitempty"`
 }
 
 func (x *RegisterPeerRequest) Reset() {
@@ -83,9 +83,9 @@ func (*RegisterPeerRequest) Descriptor() ([]byte, []int) {
 	return file_pkg_apis_scheduler_v2_scheduler_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *RegisterPeerRequest) GetDownload() *v2.Download {
+func (x *RegisterPeerRequest) GetDownloadTask() *v2.DownloadTask {
 	if x != nil {
-		return x.Download
+		return x.DownloadTask
 	}
 	return nil
 }
@@ -2057,367 +2057,368 @@ var file_pkg_apis_scheduler_v2_scheduler_proto_rawDesc = []byte{
 	0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x64, 0x75, 0x72, 0x61, 0x74,
 	0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1f, 0x67, 0x6f, 0x6f, 0x67, 0x6c,
 	0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74, 0x69, 0x6d, 0x65, 0x73,
-	0x74, 0x61, 0x6d, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x50, 0x0a, 0x13, 0x52, 0x65,
+	0x74, 0x61, 0x6d, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x5d, 0x0a, 0x13, 0x52, 0x65,
 	0x67, 0x69, 0x73, 0x74, 0x65, 0x72, 0x50, 0x65, 0x65, 0x72, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
-	0x74, 0x12, 0x39, 0x0a, 0x08, 0x64, 0x6f, 0x77, 0x6e, 0x6c, 0x6f, 0x61, 0x64, 0x18, 0x01, 0x20,
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+	0x68, 0x65, 0x64, 0x75, 0x6c, 0x65, 0x72, 0x2e, 0x76, 0x32, 0x2e, 0x4c, 0x65, 0x61, 0x76, 0x65,
+	0x54, 0x61, 0x73, 0x6b, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x67, 0x6f,
+	0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d,
+	0x70, 0x74, 0x79, 0x12, 0x49, 0x0a, 0x0c, 0x41, 0x6e, 0x6e, 0x6f, 0x75, 0x6e, 0x63, 0x65, 0x48,
+	0x6f, 0x73, 0x74, 0x12, 0x21, 0x2e, 0x73, 0x63, 0x68, 0x65, 0x64, 0x75, 0x6c, 0x65, 0x72, 0x2e,
+	0x76, 0x32, 0x2e, 0x41, 0x6e, 0x6e, 0x6f, 0x75, 0x6e, 0x63, 0x65, 0x48, 0x6f, 0x73, 0x74, 0x52,
+	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x12, 0x43,
+	0x0a, 0x09, 0x4c, 0x65, 0x61, 0x76, 0x65, 0x48, 0x6f, 0x73, 0x74, 0x12, 0x1e, 0x2e, 0x73, 0x63,
+	0x68, 0x65, 0x64, 0x75, 0x6c, 0x65, 0x72, 0x2e, 0x76, 0x32, 0x2e, 0x4c, 0x65, 0x61, 0x76, 0x65,
+	0x48, 0x6f, 0x73, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x67, 0x6f,
+	0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d,
+	0x70, 0x74, 0x79, 0x12, 0x53, 0x0a, 0x0a, 0x53, 0x79, 0x6e, 0x63, 0x50, 0x72, 0x6f, 0x62, 0x65,
+	0x73, 0x12, 0x1f, 0x2e, 0x73, 0x63, 0x68, 0x65, 0x64, 0x75, 0x6c, 0x65, 0x72, 0x2e, 0x76, 0x32,
+	0x2e, 0x53, 0x79, 0x6e, 0x63, 0x50, 0x72, 0x6f, 0x62, 0x65, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65,
+	0x73, 0x74, 0x1a, 0x20, 0x2e, 0x73, 0x63, 0x68, 0x65, 0x64, 0x75, 0x6c, 0x65, 0x72, 0x2e, 0x76,
+	0x32, 0x2e, 0x53, 0x79, 0x6e, 0x63, 0x50, 0x72, 0x6f, 0x62, 0x65, 0x73, 0x52, 0x65, 0x73, 0x70,
+	0x6f, 0x6e, 0x73, 0x65, 0x28, 0x01, 0x30, 0x01, 0x42, 0x2f, 0x5a, 0x2d, 0x64, 0x37, 0x79, 0x2e,
+	0x69, 0x6f, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x76, 0x32, 0x2f, 0x70, 0x6b, 0x67, 0x2f, 0x61, 0x70,
+	0x69, 0x73, 0x2f, 0x73, 0x63, 0x68, 0x65, 0x64, 0x75, 0x6c, 0x65, 0x72, 0x2f, 0x76, 0x32, 0x3b,
+	0x73, 0x63, 0x68, 0x65, 0x64, 0x75, 0x6c, 0x65, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
 }
 
 var (
@@ -2466,7 +2467,7 @@ var file_pkg_apis_scheduler_v2_scheduler_proto_goTypes = []interface{}{
 	(*ProbeFailedRequest)(nil),                       // 29: scheduler.v2.ProbeFailedRequest
 	(*SyncProbesRequest)(nil),                        // 30: scheduler.v2.SyncProbesRequest
 	(*SyncProbesResponse)(nil),                       // 31: scheduler.v2.SyncProbesResponse
-	(*v2.Download)(nil),                              // 32: common.v2.Download
+	(*v2.DownloadTask)(nil),                          // 32: common.v2.DownloadTask
 	(*v2.Peer)(nil),                                  // 33: common.v2.Peer
 	(*v2.Piece)(nil),                                 // 34: common.v2.Piece
 	(*v21.Backend)(nil),                              // 35: errordetails.v2.Backend
@@ -2477,7 +2478,7 @@ var file_pkg_apis_scheduler_v2_scheduler_proto_goTypes = []interface{}{
 	(*v2.Task)(nil),                                  // 40: common.v2.Task
 }
 var file_pkg_apis_scheduler_v2_scheduler_proto_depIdxs = []int32{
-	32, // 0: scheduler.v2.RegisterPeerRequest.download:type_name -> common.v2.Download
+	32, // 0: scheduler.v2.RegisterPeerRequest.download_task:type_name -> common.v2.DownloadTask
 	33, // 1: scheduler.v2.RescheduleRequest.candidate_parents:type_name -> common.v2.Peer
 	34, // 2: scheduler.v2.DownloadPieceFinishedRequest.piece:type_name -> common.v2.Piece
 	34, // 3: scheduler.v2.DownloadPieceBackToSourceFinishedRequest.piece:type_name -> common.v2.Piece
diff --git a/pkg/apis/scheduler/v2/scheduler.pb.validate.go b/pkg/apis/scheduler/v2/scheduler.pb.validate.go
index ac3bcb1..7103676 100644
--- a/pkg/apis/scheduler/v2/scheduler.pb.validate.go
+++ b/pkg/apis/scheduler/v2/scheduler.pb.validate.go
@@ -57,9 +57,9 @@ func (m *RegisterPeerRequest) validate(all bool) error {
 
 	var errors []error
 
-	if m.GetDownload() == nil {
+	if m.GetDownloadTask() == nil {
 		err := RegisterPeerRequestValidationError{
-			field:  "Download",
+			field:  "DownloadTask",
 			reason: "value is required",
 		}
 		if !all {
@@ -69,11 +69,11 @@ func (m *RegisterPeerRequest) validate(all bool) error {
 	}
 
 	if all {
-		switch v := interface{}(m.GetDownload()).(type) {
+		switch v := interface{}(m.GetDownloadTask()).(type) {
 		case interface{ ValidateAll() error }:
 			if err := v.ValidateAll(); err != nil {
 				errors = append(errors, RegisterPeerRequestValidationError{
-					field:  "Download",
+					field:  "DownloadTask",
 					reason: "embedded message failed validation",
 					cause:  err,
 				})
@@ -81,16 +81,16 @@ func (m *RegisterPeerRequest) validate(all bool) error {
 		case interface{ Validate() error }:
 			if err := v.Validate(); err != nil {
 				errors = append(errors, RegisterPeerRequestValidationError{
-					field:  "Download",
+					field:  "DownloadTask",
 					reason: "embedded message failed validation",
 					cause:  err,
 				})
 			}
 		}
-	} else if v, ok := interface{}(m.GetDownload()).(interface{ Validate() error }); ok {
+	} else if v, ok := interface{}(m.GetDownloadTask()).(interface{ Validate() error }); ok {
 		if err := v.Validate(); err != nil {
 			return RegisterPeerRequestValidationError{
-				field:  "Download",
+				field:  "DownloadTask",
 				reason: "embedded message failed validation",
 				cause:  err,
 			}
diff --git a/pkg/apis/scheduler/v2/scheduler.proto b/pkg/apis/scheduler/v2/scheduler.proto
index d5639dd..64b025b 100644
--- a/pkg/apis/scheduler/v2/scheduler.proto
+++ b/pkg/apis/scheduler/v2/scheduler.proto
@@ -30,7 +30,7 @@ option go_package = "d7y.io/api/v2/pkg/apis/scheduler/v2;scheduler";
 // RegisterPeerRequest represents peer registered request of AnnouncePeerRequest.
 message RegisterPeerRequest {
   // Download information.
-  common.v2.Download download = 1 [(validate.rules).message.required = true];
+  common.v2.DownloadTask download_task = 1 [(validate.rules).message.required = true];
 }
 
 // DownloadPeerStartedRequest represents peer download started request of AnnouncePeerRequest.
diff --git a/proto/common.proto b/proto/common.proto
index 5975f36..54383e9 100644
--- a/proto/common.proto
+++ b/proto/common.proto
@@ -126,6 +126,28 @@ message Peer {
   google.protobuf.Timestamp updated_at = 11;
 }
 
+// CachePeer metadata.
+message CachePeer {
+  // Peer id.
+  string id = 1;
+  // Persistent represents whether the cache peer is persistent.
+  // If the cache peer is persistent, the cache peer will
+  // not be deleted when dfdamon runs garbage collection.
+  bool persistent = 2;
+  // Peer downloads costs time.
+  google.protobuf.Duration cost = 3;
+  // Peer state.
+  string state = 4;
+  // Task info.
+  CacheTask task = 5;
+  // Host info.
+  Host host = 6;
+  // Peer create time.
+  google.protobuf.Timestamp created_at = 7;
+  // Peer update time.
+  google.protobuf.Timestamp updated_at = 8;
+}
+
 // Task metadata.
 message Task {
   // Task id.
@@ -134,7 +156,7 @@ message Task {
   TaskType type = 2;
   // Download url.
   string url = 3;
-  // Digest of the task digest, for example md5:xxx or sha256:yyy.
+  // Digest of the task digest, for example blake3:xxx or sha256:yyy.
   optional string digest = 4;
   // URL tag identifies different task for same url.
   optional string tag = 5;
@@ -170,6 +192,34 @@ message Task {
   google.protobuf.Timestamp updated_at = 18;
 }
 
+// CacheTask metadata.
+message CacheTask {
+  // Task id.
+  string id = 1;
+  // Replica count of the persistent cache task.
+  uint64 persistent_replica_count = 2;
+  // Replica count of the cache task.
+  uint64 replica_count = 3;
+  // Digest of the task digest, for example blake3:xxx or sha256:yyy.
+  string digest = 4;
+  // Tag is used to distinguish different cache tasks.
+  optional string tag = 5;
+  // Application of task.
+  optional string application = 6;
+  // Task piece length.
+  uint64 piece_length = 7;
+  // Task content length.
+  uint64 content_length = 8;
+  // Task piece count.
+  uint32 piece_count = 9;
+  // Task state.
+  string state = 10;
+  // Task create time.
+  google.protobuf.Timestamp created_at = 11;
+  // Task update time.
+  google.protobuf.Timestamp updated_at = 12;
+}
+
 // Host metadata.
 message Host {
   // Host id.
@@ -309,11 +359,11 @@ message Build {
   optional string platform = 5;
 }
 
-// Download information.
-message Download {
+// DownloadTask information.
+message DownloadTask {
   // Download url.
   string url = 1;
-  // Digest of the task digest, for example md5:xxx or sha256:yyy.
+  // Digest of the task digest, for example :xxx or sha256:yyy.
   optional string digest = 2;
   // Range is url range of request. If protocol is http, range
   // will set in request header. If protocol is others, range
@@ -369,7 +419,7 @@ message Piece {
   uint64 offset = 3;
   // Piece length.
   uint64 length = 4;
-  // Digest of the piece data, for example md5:xxx or sha256:yyy.
+  // Digest of the piece data, for example blake3:xxx or sha256:yyy.
   string digest = 5;
   // Piece content.
   optional bytes content = 6;
diff --git a/proto/dfdaemon.proto b/proto/dfdaemon.proto
index d96644c..f9e09c6 100644
--- a/proto/dfdaemon.proto
+++ b/proto/dfdaemon.proto
@@ -19,12 +19,13 @@ syntax = "proto3";
 package dfdaemon.v2;
 
 import "common.proto";
+import "google/protobuf/duration.proto";
 import "google/protobuf/empty.proto";
 
 // DownloadTaskRequest represents request of DownloadTask.
 message DownloadTaskRequest {
   // Download information.
-  common.v2.Download download = 1;
+  common.v2.DownloadTask download_task = 1;
 }
 
 // DownloadTaskStartedResponse represents task download started response of DownloadTaskResponse.
@@ -101,24 +102,6 @@ message DownloadPieceResponse {
   common.v2.Piece piece = 1;
 }
 
-// DfdaemonUpload represents upload service of dfdaemon.
-service DfdaemonUpload{
-  // DownloadTask downloads task from p2p network.
-  rpc DownloadTask(DownloadTaskRequest) returns(stream DownloadTaskResponse);
-
-  // SyncPieces syncs piece metadatas from remote peer.
-  rpc SyncPieces(SyncPiecesRequest) returns(stream SyncPiecesResponse);
-
-  // DownloadPiece downloads piece from the remote peer.
-  rpc DownloadPiece(DownloadPieceRequest)returns(DownloadPieceResponse);
-}
-
-// UploadTaskRequest represents request of UploadTask.
-message UploadTaskRequest {
-  // Task metadata.
-  common.v2.Task task = 1;
-}
-
 // StatTaskRequest represents request of StatTask.
 message StatTaskRequest {
   // Task id.
@@ -131,14 +114,96 @@ message DeleteTaskRequest {
   string task_id = 1;
 }
 
+// DownloadCacheTaskRequest represents request of DownloadCacheTask.
+message DownloadCacheTaskRequest {
+  // Host id.
+  string host_id = 1;
+  // Task id.
+  string task_id = 2;
+  // Tag is used to distinguish different cache tasks.
+  optional string tag = 3;
+  // Application of task.
+  optional string application = 4;
+  // Task piece length.
+  uint64 piece_length = 5;
+  // File path to be exported.
+  string output_path = 6;
+  // Download timeout.
+  optional google.protobuf.Duration timeout = 7;
+}
+
+// DownloadCacheTaskStartedResponse represents task download started response of DownloadCacheTaskResponse.
+message DownloadCacheTaskStartedResponse {}
+
+// DownloadCacheTaskResponse represents response of DownloadCacheTask.
+message DownloadCacheTaskResponse {
+  // Host id.
+  string host_id = 1;
+  // Task id.
+  string task_id = 2;
+  // Peer id.
+  string peer_id = 3;
+
+  oneof response {
+    DownloadCacheTaskStartedResponse download_cache_task_started_response = 4;
+    DownloadPieceFinishedResponse download_piece_finished_response = 5;
+  }
+}
+
+// UploadCacheTaskRequest represents request of UploadCacheTask.
+message UploadCacheTaskRequest {
+  // Upload file path of cache task.
+  string path = 1;
+  // Replica count of the persistent cache task.
+  uint64 persistent_replica_count = 2;
+  // Tag is used to distinguish different cache tasks.
+  optional string tag = 3;
+  // Application of task.
+  optional string application = 4;
+  // Task piece length.
+  uint64 piece_length = 5;
+  // Download timeout.
+  optional google.protobuf.Duration timeout = 6;
+}
+
+// StatCacheTaskRequest represents request of StatCacheTask.
+message StatCacheTaskRequest {
+  // Task id.
+  string task_id = 1;
+}
+
+// DeleteCacheTaskRequest represents request of DeleteCacheTask.
+message DeleteCacheTaskRequest {
+  // Task id.
+  string task_id = 1;
+}
+
+// DfdaemonUpload represents upload service of dfdaemon.
+service DfdaemonUpload{
+  // DownloadTask downloads task from p2p network.
+  rpc DownloadTask(DownloadTaskRequest) returns(stream DownloadTaskResponse);
+
+  // SyncPieces syncs piece metadatas from remote peer.
+  rpc SyncPieces(SyncPiecesRequest) returns(stream SyncPiecesResponse);
+
+  // DownloadPiece downloads piece from the remote peer.
+  rpc DownloadPiece(DownloadPieceRequest)returns(DownloadPieceResponse);
+
+  // DownloadCacheTask downloads cache task from p2p network.
+  rpc DownloadCacheTask(DownloadCacheTaskRequest) returns(stream DownloadCacheTaskResponse);
+
+  // StatCacheTask stats cache task information.
+  rpc StatCacheTask(StatCacheTaskRequest) returns(common.v2.CacheTask);
+
+  // DeleteCacheTask deletes cache task from p2p network.
+  rpc DeleteCacheTask(DeleteCacheTaskRequest) returns(google.protobuf.Empty);
+}
+
 // DfdaemonDownload represents download service of dfdaemon.
 service DfdaemonDownload{
   // DownloadTask downloads task from p2p network.
   rpc DownloadTask(DownloadTaskRequest) returns(stream DownloadTaskResponse);
 
-  // UploadTask uploads task to p2p network.
-  rpc UploadTask(UploadTaskRequest) returns(google.protobuf.Empty);
-
   // StatTask stats task information.
   rpc StatTask(StatTaskRequest) returns(common.v2.Task);
 
@@ -147,4 +212,16 @@ service DfdaemonDownload{
 
   // LeaveHost releases host in scheduler.
   rpc LeaveHost(google.protobuf.Empty)returns(google.protobuf.Empty);
+
+  // DownloadCacheTask downloads cache task from p2p network.
+  rpc DownloadCacheTask(DownloadCacheTaskRequest) returns(stream DownloadCacheTaskResponse);
+
+  // UploadCacheTask uploads cache task to p2p network.
+  rpc UploadCacheTask(UploadCacheTaskRequest) returns(common.v2.CacheTask);
+
+  // StatCacheTask stats cache task information.
+  rpc StatCacheTask(StatCacheTaskRequest) returns(common.v2.CacheTask);
+
+  // DeleteCacheTask deletes cache task from p2p network.
+  rpc DeleteCacheTask(DeleteCacheTaskRequest) returns(google.protobuf.Empty);
 }
diff --git a/proto/scheduler.proto b/proto/scheduler.proto
index 24d2574..08c6d89 100644
--- a/proto/scheduler.proto
+++ b/proto/scheduler.proto
@@ -27,7 +27,7 @@ import "google/protobuf/timestamp.proto";
 // RegisterPeerRequest represents peer registered request of AnnouncePeerRequest.
 message RegisterPeerRequest {
   // Download information.
-  common.v2.Download download = 1;
+  common.v2.DownloadTask download_task = 1;
 }
 
 // DownloadPeerStartedRequest represents peer download started request of AnnouncePeerRequest.
diff --git a/src/common.v2.rs b/src/common.v2.rs
index b15af6d..5066d5c 100644
--- a/src/common.v2.rs
+++ b/src/common.v2.rs
@@ -37,6 +37,38 @@ pub struct Peer {
     #[prost(message, optional, tag = "11")]
     pub updated_at: ::core::option::Option<::prost_wkt_types::Timestamp>,
 }
+/// CachePeer metadata.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct CachePeer {
+    /// Peer id.
+    #[prost(string, tag = "1")]
+    pub id: ::prost::alloc::string::String,
+    /// Persistent represents whether the cache peer is persistent.
+    /// If the cache peer is persistent, the cache peer will
+    /// not be deleted when dfdamon runs garbage collection.
+    #[prost(bool, tag = "2")]
+    pub persistent: bool,
+    /// Peer downloads costs time.
+    #[prost(message, optional, tag = "3")]
+    pub cost: ::core::option::Option<::prost_wkt_types::Duration>,
+    /// Peer state.
+    #[prost(string, tag = "4")]
+    pub state: ::prost::alloc::string::String,
+    /// Task info.
+    #[prost(message, optional, tag = "5")]
+    pub task: ::core::option::Option<CacheTask>,
+    /// Host info.
+    #[prost(message, optional, tag = "6")]
+    pub host: ::core::option::Option<Host>,
+    /// Peer create time.
+    #[prost(message, optional, tag = "7")]
+    pub created_at: ::core::option::Option<::prost_wkt_types::Timestamp>,
+    /// Peer update time.
+    #[prost(message, optional, tag = "8")]
+    pub updated_at: ::core::option::Option<::prost_wkt_types::Timestamp>,
+}
 /// Task metadata.
 #[derive(serde::Serialize, serde::Deserialize)]
 #[allow(clippy::derive_partial_eq_without_eq)]
@@ -51,7 +83,7 @@ pub struct Task {
     /// Download url.
     #[prost(string, tag = "3")]
     pub url: ::prost::alloc::string::String,
-    /// Digest of the task digest, for example md5:xxx or sha256:yyy.
+    /// Digest of the task digest, for example blake3:xxx or sha256:yyy.
     #[prost(string, optional, tag = "4")]
     pub digest: ::core::option::Option<::prost::alloc::string::String>,
     /// URL tag identifies different task for same url.
@@ -104,6 +136,48 @@ pub struct Task {
     #[prost(message, optional, tag = "18")]
     pub updated_at: ::core::option::Option<::prost_wkt_types::Timestamp>,
 }
+/// CacheTask metadata.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct CacheTask {
+    /// Task id.
+    #[prost(string, tag = "1")]
+    pub id: ::prost::alloc::string::String,
+    /// Replica count of the persistent cache task.
+    #[prost(uint64, tag = "2")]
+    pub persistent_replica_count: u64,
+    /// Replica count of the cache task.
+    #[prost(uint64, tag = "3")]
+    pub replica_count: u64,
+    /// Digest of the task digest, for example blake3:xxx or sha256:yyy.
+    #[prost(string, tag = "4")]
+    pub digest: ::prost::alloc::string::String,
+    /// Tag is used to distinguish different cache tasks.
+    #[prost(string, optional, tag = "5")]
+    pub tag: ::core::option::Option<::prost::alloc::string::String>,
+    /// Application of task.
+    #[prost(string, optional, tag = "6")]
+    pub application: ::core::option::Option<::prost::alloc::string::String>,
+    /// Task piece length.
+    #[prost(uint64, tag = "7")]
+    pub piece_length: u64,
+    /// Task content length.
+    #[prost(uint64, tag = "8")]
+    pub content_length: u64,
+    /// Task piece count.
+    #[prost(uint32, tag = "9")]
+    pub piece_count: u32,
+    /// Task state.
+    #[prost(string, tag = "10")]
+    pub state: ::prost::alloc::string::String,
+    /// Task create time.
+    #[prost(message, optional, tag = "11")]
+    pub created_at: ::core::option::Option<::prost_wkt_types::Timestamp>,
+    /// Task update time.
+    #[prost(message, optional, tag = "12")]
+    pub updated_at: ::core::option::Option<::prost_wkt_types::Timestamp>,
+}
 /// Host metadata.
 #[derive(serde::Serialize, serde::Deserialize)]
 #[allow(clippy::derive_partial_eq_without_eq)]
@@ -312,15 +386,15 @@ pub struct Build {
     #[prost(string, optional, tag = "5")]
     pub platform: ::core::option::Option<::prost::alloc::string::String>,
 }
-/// Download information.
+/// DownloadTask information.
 #[derive(serde::Serialize, serde::Deserialize)]
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
-pub struct Download {
+pub struct DownloadTask {
     /// Download url.
     #[prost(string, tag = "1")]
     pub url: ::prost::alloc::string::String,
-    /// Digest of the task digest, for example md5:xxx or sha256:yyy.
+    /// Digest of the task digest, for example :xxx or sha256:yyy.
     #[prost(string, optional, tag = "2")]
     pub digest: ::core::option::Option<::prost::alloc::string::String>,
     /// Range is url range of request. If protocol is http, range
@@ -404,7 +478,7 @@ pub struct Piece {
     /// Piece length.
     #[prost(uint64, tag = "4")]
     pub length: u64,
-    /// Digest of the piece data, for example md5:xxx or sha256:yyy.
+    /// Digest of the piece data, for example blake3:xxx or sha256:yyy.
     #[prost(string, tag = "5")]
     pub digest: ::prost::alloc::string::String,
     /// Piece content.
diff --git a/src/descriptor.bin b/src/descriptor.bin
index e014f72..9520d15 100644
Binary files a/src/descriptor.bin and b/src/descriptor.bin differ
diff --git a/src/dfdaemon.v2.rs b/src/dfdaemon.v2.rs
index 04f15a6..13d7176 100644
--- a/src/dfdaemon.v2.rs
+++ b/src/dfdaemon.v2.rs
@@ -5,7 +5,7 @@
 pub struct DownloadTaskRequest {
     /// Download information.
     #[prost(message, optional, tag = "1")]
-    pub download: ::core::option::Option<super::super::common::v2::Download>,
+    pub download_task: ::core::option::Option<super::super::common::v2::DownloadTask>,
 }
 /// DownloadTaskStartedResponse represents task download started response of DownloadTaskResponse.
 #[derive(serde::Serialize, serde::Deserialize)]
@@ -122,15 +122,6 @@ pub struct DownloadPieceResponse {
     #[prost(message, optional, tag = "1")]
     pub piece: ::core::option::Option<super::super::common::v2::Piece>,
 }
-/// UploadTaskRequest represents request of UploadTask.
-#[derive(serde::Serialize, serde::Deserialize)]
-#[allow(clippy::derive_partial_eq_without_eq)]
-#[derive(Clone, PartialEq, ::prost::Message)]
-pub struct UploadTaskRequest {
-    /// Task metadata.
-    #[prost(message, optional, tag = "1")]
-    pub task: ::core::option::Option<super::super::common::v2::Task>,
-}
 /// StatTaskRequest represents request of StatTask.
 #[derive(serde::Serialize, serde::Deserialize)]
 #[allow(clippy::derive_partial_eq_without_eq)]
@@ -149,6 +140,109 @@ pub struct DeleteTaskRequest {
     #[prost(string, tag = "1")]
     pub task_id: ::prost::alloc::string::String,
 }
+/// DownloadCacheTaskRequest represents request of DownloadCacheTask.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct DownloadCacheTaskRequest {
+    /// Host id.
+    #[prost(string, tag = "1")]
+    pub host_id: ::prost::alloc::string::String,
+    /// Task id.
+    #[prost(string, tag = "2")]
+    pub task_id: ::prost::alloc::string::String,
+    /// Tag is used to distinguish different cache tasks.
+    #[prost(string, optional, tag = "3")]
+    pub tag: ::core::option::Option<::prost::alloc::string::String>,
+    /// Application of task.
+    #[prost(string, optional, tag = "4")]
+    pub application: ::core::option::Option<::prost::alloc::string::String>,
+    /// Task piece length.
+    #[prost(uint64, tag = "5")]
+    pub piece_length: u64,
+    /// File path to be exported.
+    #[prost(string, tag = "6")]
+    pub output_path: ::prost::alloc::string::String,
+    /// Download timeout.
+    #[prost(message, optional, tag = "7")]
+    pub timeout: ::core::option::Option<::prost_wkt_types::Duration>,
+}
+/// DownloadCacheTaskStartedResponse represents task download started response of DownloadCacheTaskResponse.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct DownloadCacheTaskStartedResponse {}
+/// DownloadCacheTaskResponse represents response of DownloadCacheTask.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct DownloadCacheTaskResponse {
+    /// Host id.
+    #[prost(string, tag = "1")]
+    pub host_id: ::prost::alloc::string::String,
+    /// Task id.
+    #[prost(string, tag = "2")]
+    pub task_id: ::prost::alloc::string::String,
+    /// Peer id.
+    #[prost(string, tag = "3")]
+    pub peer_id: ::prost::alloc::string::String,
+    #[prost(oneof = "download_cache_task_response::Response", tags = "4, 5")]
+    pub response: ::core::option::Option<download_cache_task_response::Response>,
+}
+/// Nested message and enum types in `DownloadCacheTaskResponse`.
+pub mod download_cache_task_response {
+    #[derive(serde::Serialize, serde::Deserialize)]
+    #[allow(clippy::derive_partial_eq_without_eq)]
+    #[derive(Clone, PartialEq, ::prost::Oneof)]
+    pub enum Response {
+        #[prost(message, tag = "4")]
+        DownloadCacheTaskStartedResponse(super::DownloadCacheTaskStartedResponse),
+        #[prost(message, tag = "5")]
+        DownloadPieceFinishedResponse(super::DownloadPieceFinishedResponse),
+    }
+}
+/// UploadCacheTaskRequest represents request of UploadCacheTask.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct UploadCacheTaskRequest {
+    /// Upload file path of cache task.
+    #[prost(string, tag = "1")]
+    pub path: ::prost::alloc::string::String,
+    /// Replica count of the persistent cache task.
+    #[prost(uint64, tag = "2")]
+    pub persistent_replica_count: u64,
+    /// Tag is used to distinguish different cache tasks.
+    #[prost(string, optional, tag = "3")]
+    pub tag: ::core::option::Option<::prost::alloc::string::String>,
+    /// Application of task.
+    #[prost(string, optional, tag = "4")]
+    pub application: ::core::option::Option<::prost::alloc::string::String>,
+    /// Task piece length.
+    #[prost(uint64, tag = "5")]
+    pub piece_length: u64,
+    /// Download timeout.
+    #[prost(message, optional, tag = "6")]
+    pub timeout: ::core::option::Option<::prost_wkt_types::Duration>,
+}
+/// StatCacheTaskRequest represents request of StatCacheTask.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct StatCacheTaskRequest {
+    /// Task id.
+    #[prost(string, tag = "1")]
+    pub task_id: ::prost::alloc::string::String,
+}
+/// DeleteCacheTaskRequest represents request of DeleteCacheTask.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct DeleteCacheTaskRequest {
+    /// Task id.
+    #[prost(string, tag = "1")]
+    pub task_id: ::prost::alloc::string::String,
+}
 /// Generated client implementations.
 pub mod dfdaemon_upload_client {
     #![allow(unused_variables, dead_code, missing_docs, clippy::let_unit_value)]
@@ -313,6 +407,85 @@ pub mod dfdaemon_upload_client {
                 .insert(GrpcMethod::new("dfdaemon.v2.DfdaemonUpload", "DownloadPiece"));
             self.inner.unary(req, path, codec).await
         }
+        /// DownloadCacheTask downloads cache task from p2p network.
+        pub async fn download_cache_task(
+            &mut self,
+            request: impl tonic::IntoRequest<super::DownloadCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<tonic::codec::Streaming<super::DownloadCacheTaskResponse>>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/dfdaemon.v2.DfdaemonUpload/DownloadCacheTask",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(
+                    GrpcMethod::new("dfdaemon.v2.DfdaemonUpload", "DownloadCacheTask"),
+                );
+            self.inner.server_streaming(req, path, codec).await
+        }
+        /// StatCacheTask stats cache task information.
+        pub async fn stat_cache_task(
+            &mut self,
+            request: impl tonic::IntoRequest<super::StatCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::super::super::common::v2::CacheTask>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/dfdaemon.v2.DfdaemonUpload/StatCacheTask",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(GrpcMethod::new("dfdaemon.v2.DfdaemonUpload", "StatCacheTask"));
+            self.inner.unary(req, path, codec).await
+        }
+        /// DeleteCacheTask deletes cache task from p2p network.
+        pub async fn delete_cache_task(
+            &mut self,
+            request: impl tonic::IntoRequest<super::DeleteCacheTaskRequest>,
+        ) -> std::result::Result<tonic::Response<()>, tonic::Status> {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/dfdaemon.v2.DfdaemonUpload/DeleteCacheTask",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(
+                    GrpcMethod::new("dfdaemon.v2.DfdaemonUpload", "DeleteCacheTask"),
+                );
+            self.inner.unary(req, path, codec).await
+        }
     }
 }
 /// Generated client implementations.
@@ -427,29 +600,6 @@ pub mod dfdaemon_download_client {
                 .insert(GrpcMethod::new("dfdaemon.v2.DfdaemonDownload", "DownloadTask"));
             self.inner.server_streaming(req, path, codec).await
         }
-        /// UploadTask uploads task to p2p network.
-        pub async fn upload_task(
-            &mut self,
-            request: impl tonic::IntoRequest<super::UploadTaskRequest>,
-        ) -> std::result::Result<tonic::Response<()>, tonic::Status> {
-            self.inner
-                .ready()
-                .await
-                .map_err(|e| {
-                    tonic::Status::new(
-                        tonic::Code::Unknown,
-                        format!("Service was not ready: {}", e.into()),
-                    )
-                })?;
-            let codec = tonic::codec::ProstCodec::default();
-            let path = http::uri::PathAndQuery::from_static(
-                "/dfdaemon.v2.DfdaemonDownload/UploadTask",
-            );
-            let mut req = request.into_request();
-            req.extensions_mut()
-                .insert(GrpcMethod::new("dfdaemon.v2.DfdaemonDownload", "UploadTask"));
-            self.inner.unary(req, path, codec).await
-        }
         /// StatTask stats task information.
         pub async fn stat_task(
             &mut self,
@@ -522,6 +672,115 @@ pub mod dfdaemon_download_client {
                 .insert(GrpcMethod::new("dfdaemon.v2.DfdaemonDownload", "LeaveHost"));
             self.inner.unary(req, path, codec).await
         }
+        /// DownloadCacheTask downloads cache task from p2p network.
+        pub async fn download_cache_task(
+            &mut self,
+            request: impl tonic::IntoRequest<super::DownloadCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<tonic::codec::Streaming<super::DownloadCacheTaskResponse>>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/dfdaemon.v2.DfdaemonDownload/DownloadCacheTask",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(
+                    GrpcMethod::new("dfdaemon.v2.DfdaemonDownload", "DownloadCacheTask"),
+                );
+            self.inner.server_streaming(req, path, codec).await
+        }
+        /// UploadCacheTask uploads cache task to p2p network.
+        pub async fn upload_cache_task(
+            &mut self,
+            request: impl tonic::IntoRequest<super::UploadCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::super::super::common::v2::CacheTask>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/dfdaemon.v2.DfdaemonDownload/UploadCacheTask",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(
+                    GrpcMethod::new("dfdaemon.v2.DfdaemonDownload", "UploadCacheTask"),
+                );
+            self.inner.unary(req, path, codec).await
+        }
+        /// StatCacheTask stats cache task information.
+        pub async fn stat_cache_task(
+            &mut self,
+            request: impl tonic::IntoRequest<super::StatCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::super::super::common::v2::CacheTask>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/dfdaemon.v2.DfdaemonDownload/StatCacheTask",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(
+                    GrpcMethod::new("dfdaemon.v2.DfdaemonDownload", "StatCacheTask"),
+                );
+            self.inner.unary(req, path, codec).await
+        }
+        /// DeleteCacheTask deletes cache task from p2p network.
+        pub async fn delete_cache_task(
+            &mut self,
+            request: impl tonic::IntoRequest<super::DeleteCacheTaskRequest>,
+        ) -> std::result::Result<tonic::Response<()>, tonic::Status> {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/dfdaemon.v2.DfdaemonDownload/DeleteCacheTask",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(
+                    GrpcMethod::new("dfdaemon.v2.DfdaemonDownload", "DeleteCacheTask"),
+                );
+            self.inner.unary(req, path, codec).await
+        }
     }
 }
 /// Generated server implementations.
@@ -564,6 +823,36 @@ pub mod dfdaemon_upload_server {
             tonic::Response<super::DownloadPieceResponse>,
             tonic::Status,
         >;
+        /// Server streaming response type for the DownloadCacheTask method.
+        type DownloadCacheTaskStream: futures_core::Stream<
+                Item = std::result::Result<
+                    super::DownloadCacheTaskResponse,
+                    tonic::Status,
+                >,
+            >
+            + Send
+            + 'static;
+        /// DownloadCacheTask downloads cache task from p2p network.
+        async fn download_cache_task(
+            &self,
+            request: tonic::Request<super::DownloadCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<Self::DownloadCacheTaskStream>,
+            tonic::Status,
+        >;
+        /// StatCacheTask stats cache task information.
+        async fn stat_cache_task(
+            &self,
+            request: tonic::Request<super::StatCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::super::super::common::v2::CacheTask>,
+            tonic::Status,
+        >;
+        /// DeleteCacheTask deletes cache task from p2p network.
+        async fn delete_cache_task(
+            &self,
+            request: tonic::Request<super::DeleteCacheTaskRequest>,
+        ) -> std::result::Result<tonic::Response<()>, tonic::Status>;
     }
     /// DfdaemonUpload represents upload service of dfdaemon.
     #[derive(Debug)]
@@ -783,6 +1072,146 @@ pub mod dfdaemon_upload_server {
                     };
                     Box::pin(fut)
                 }
+                "/dfdaemon.v2.DfdaemonUpload/DownloadCacheTask" => {
+                    #[allow(non_camel_case_types)]
+                    struct DownloadCacheTaskSvc<T: DfdaemonUpload>(pub Arc<T>);
+                    impl<
+                        T: DfdaemonUpload,
+                    > tonic::server::ServerStreamingService<
+                        super::DownloadCacheTaskRequest,
+                    > for DownloadCacheTaskSvc<T> {
+                        type Response = super::DownloadCacheTaskResponse;
+                        type ResponseStream = T::DownloadCacheTaskStream;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::ResponseStream>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::DownloadCacheTaskRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                (*inner).download_cache_task(request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = DownloadCacheTaskSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.server_streaming(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
+                "/dfdaemon.v2.DfdaemonUpload/StatCacheTask" => {
+                    #[allow(non_camel_case_types)]
+                    struct StatCacheTaskSvc<T: DfdaemonUpload>(pub Arc<T>);
+                    impl<
+                        T: DfdaemonUpload,
+                    > tonic::server::UnaryService<super::StatCacheTaskRequest>
+                    for StatCacheTaskSvc<T> {
+                        type Response = super::super::super::common::v2::CacheTask;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::StatCacheTaskRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                (*inner).stat_cache_task(request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = StatCacheTaskSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
+                "/dfdaemon.v2.DfdaemonUpload/DeleteCacheTask" => {
+                    #[allow(non_camel_case_types)]
+                    struct DeleteCacheTaskSvc<T: DfdaemonUpload>(pub Arc<T>);
+                    impl<
+                        T: DfdaemonUpload,
+                    > tonic::server::UnaryService<super::DeleteCacheTaskRequest>
+                    for DeleteCacheTaskSvc<T> {
+                        type Response = ();
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::DeleteCacheTaskRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                (*inner).delete_cache_task(request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = DeleteCacheTaskSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
                 _ => {
                     Box::pin(async move {
                         Ok(
@@ -845,11 +1274,6 @@ pub mod dfdaemon_download_server {
             tonic::Response<Self::DownloadTaskStream>,
             tonic::Status,
         >;
-        /// UploadTask uploads task to p2p network.
-        async fn upload_task(
-            &self,
-            request: tonic::Request<super::UploadTaskRequest>,
-        ) -> std::result::Result<tonic::Response<()>, tonic::Status>;
         /// StatTask stats task information.
         async fn stat_task(
             &self,
@@ -868,6 +1292,44 @@ pub mod dfdaemon_download_server {
             &self,
             request: tonic::Request<()>,
         ) -> std::result::Result<tonic::Response<()>, tonic::Status>;
+        /// Server streaming response type for the DownloadCacheTask method.
+        type DownloadCacheTaskStream: futures_core::Stream<
+                Item = std::result::Result<
+                    super::DownloadCacheTaskResponse,
+                    tonic::Status,
+                >,
+            >
+            + Send
+            + 'static;
+        /// DownloadCacheTask downloads cache task from p2p network.
+        async fn download_cache_task(
+            &self,
+            request: tonic::Request<super::DownloadCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<Self::DownloadCacheTaskStream>,
+            tonic::Status,
+        >;
+        /// UploadCacheTask uploads cache task to p2p network.
+        async fn upload_cache_task(
+            &self,
+            request: tonic::Request<super::UploadCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::super::super::common::v2::CacheTask>,
+            tonic::Status,
+        >;
+        /// StatCacheTask stats cache task information.
+        async fn stat_cache_task(
+            &self,
+            request: tonic::Request<super::StatCacheTaskRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::super::super::common::v2::CacheTask>,
+            tonic::Status,
+        >;
+        /// DeleteCacheTask deletes cache task from p2p network.
+        async fn delete_cache_task(
+            &self,
+            request: tonic::Request<super::DeleteCacheTaskRequest>,
+        ) -> std::result::Result<tonic::Response<()>, tonic::Status>;
     }
     /// DfdaemonDownload represents download service of dfdaemon.
     #[derive(Debug)]
@@ -996,50 +1458,6 @@ pub mod dfdaemon_download_server {
                     };
                     Box::pin(fut)
                 }
-                "/dfdaemon.v2.DfdaemonDownload/UploadTask" => {
-                    #[allow(non_camel_case_types)]
-                    struct UploadTaskSvc<T: DfdaemonDownload>(pub Arc<T>);
-                    impl<
-                        T: DfdaemonDownload,
-                    > tonic::server::UnaryService<super::UploadTaskRequest>
-                    for UploadTaskSvc<T> {
-                        type Response = ();
-                        type Future = BoxFuture<
-                            tonic::Response<Self::Response>,
-                            tonic::Status,
-                        >;
-                        fn call(
-                            &mut self,
-                            request: tonic::Request<super::UploadTaskRequest>,
-                        ) -> Self::Future {
-                            let inner = Arc::clone(&self.0);
-                            let fut = async move { (*inner).upload_task(request).await };
-                            Box::pin(fut)
-                        }
-                    }
-                    let accept_compression_encodings = self.accept_compression_encodings;
-                    let send_compression_encodings = self.send_compression_encodings;
-                    let max_decoding_message_size = self.max_decoding_message_size;
-                    let max_encoding_message_size = self.max_encoding_message_size;
-                    let inner = self.inner.clone();
-                    let fut = async move {
-                        let inner = inner.0;
-                        let method = UploadTaskSvc(inner);
-                        let codec = tonic::codec::ProstCodec::default();
-                        let mut grpc = tonic::server::Grpc::new(codec)
-                            .apply_compression_config(
-                                accept_compression_encodings,
-                                send_compression_encodings,
-                            )
-                            .apply_max_message_size_config(
-                                max_decoding_message_size,
-                                max_encoding_message_size,
-                            );
-                        let res = grpc.unary(method, req).await;
-                        Ok(res)
-                    };
-                    Box::pin(fut)
-                }
                 "/dfdaemon.v2.DfdaemonDownload/StatTask" => {
                     #[allow(non_camel_case_types)]
                     struct StatTaskSvc<T: DfdaemonDownload>(pub Arc<T>);
@@ -1167,6 +1585,192 @@ pub mod dfdaemon_download_server {
                     };
                     Box::pin(fut)
                 }
+                "/dfdaemon.v2.DfdaemonDownload/DownloadCacheTask" => {
+                    #[allow(non_camel_case_types)]
+                    struct DownloadCacheTaskSvc<T: DfdaemonDownload>(pub Arc<T>);
+                    impl<
+                        T: DfdaemonDownload,
+                    > tonic::server::ServerStreamingService<
+                        super::DownloadCacheTaskRequest,
+                    > for DownloadCacheTaskSvc<T> {
+                        type Response = super::DownloadCacheTaskResponse;
+                        type ResponseStream = T::DownloadCacheTaskStream;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::ResponseStream>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::DownloadCacheTaskRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                (*inner).download_cache_task(request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = DownloadCacheTaskSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.server_streaming(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
+                "/dfdaemon.v2.DfdaemonDownload/UploadCacheTask" => {
+                    #[allow(non_camel_case_types)]
+                    struct UploadCacheTaskSvc<T: DfdaemonDownload>(pub Arc<T>);
+                    impl<
+                        T: DfdaemonDownload,
+                    > tonic::server::UnaryService<super::UploadCacheTaskRequest>
+                    for UploadCacheTaskSvc<T> {
+                        type Response = super::super::super::common::v2::CacheTask;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::UploadCacheTaskRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                (*inner).upload_cache_task(request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = UploadCacheTaskSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
+                "/dfdaemon.v2.DfdaemonDownload/StatCacheTask" => {
+                    #[allow(non_camel_case_types)]
+                    struct StatCacheTaskSvc<T: DfdaemonDownload>(pub Arc<T>);
+                    impl<
+                        T: DfdaemonDownload,
+                    > tonic::server::UnaryService<super::StatCacheTaskRequest>
+                    for StatCacheTaskSvc<T> {
+                        type Response = super::super::super::common::v2::CacheTask;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::StatCacheTaskRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                (*inner).stat_cache_task(request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = StatCacheTaskSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
+                "/dfdaemon.v2.DfdaemonDownload/DeleteCacheTask" => {
+                    #[allow(non_camel_case_types)]
+                    struct DeleteCacheTaskSvc<T: DfdaemonDownload>(pub Arc<T>);
+                    impl<
+                        T: DfdaemonDownload,
+                    > tonic::server::UnaryService<super::DeleteCacheTaskRequest>
+                    for DeleteCacheTaskSvc<T> {
+                        type Response = ();
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::DeleteCacheTaskRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                (*inner).delete_cache_task(request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = DeleteCacheTaskSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
                 _ => {
                     Box::pin(async move {
                         Ok(
diff --git a/src/scheduler.v2.rs b/src/scheduler.v2.rs
index cd0f3fa..e1cf43c 100644
--- a/src/scheduler.v2.rs
+++ b/src/scheduler.v2.rs
@@ -5,7 +5,7 @@
 pub struct RegisterPeerRequest {
     /// Download information.
     #[prost(message, optional, tag = "1")]
-    pub download: ::core::option::Option<super::super::common::v2::Download>,
+    pub download_task: ::core::option::Option<super::super::common::v2::DownloadTask>,
 }
 /// DownloadPeerStartedRequest represents peer download started request of AnnouncePeerRequest.
 #[derive(serde::Serialize, serde::Deserialize)]