diff --git a/Cargo.lock b/Cargo.lock
index 05a6f77..6b4a5ab 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -190,7 +190,7 @@ dependencies = [
 
 [[package]]
 name = "dragonfly-api"
-version = "2.1.18"
+version = "2.1.19"
 dependencies = [
  "prost",
  "prost-types",
diff --git a/Cargo.toml b/Cargo.toml
index 1ea45a9..6a4d0c0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "dragonfly-api"
-version = "2.1.18"
+version = "2.1.19"
 authors = ["Gaius <gaius.qi@gmail.com>"]
 edition = "2021"
 license = "Apache-2.0"
diff --git a/pkg/apis/scheduler/v2/scheduler.pb.go b/pkg/apis/scheduler/v2/scheduler.pb.go
index bb61c29..13a8019 100644
--- a/pkg/apis/scheduler/v2/scheduler.pb.go
+++ b/pkg/apis/scheduler/v2/scheduler.pb.go
@@ -1602,16 +1602,20 @@ type RegisterPersistentCachePeerRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// Persistent represents whether the persistent cache task is persistent.
+	// If the persistent cache task is persistent, the persistent cache peer will
+	// not be deleted when dfdaemon runs garbage collection.
+	Persistent bool `protobuf:"varint,1,opt,name=persistent,proto3" json:"persistent,omitempty"`
 	// Tag is used to distinguish different persistent cache tasks.
-	Tag *string `protobuf:"bytes,1,opt,name=tag,proto3,oneof" json:"tag,omitempty"`
+	Tag *string `protobuf:"bytes,2,opt,name=tag,proto3,oneof" json:"tag,omitempty"`
 	// Application of task.
-	Application *string `protobuf:"bytes,2,opt,name=application,proto3,oneof" json:"application,omitempty"`
+	Application *string `protobuf:"bytes,3,opt,name=application,proto3,oneof" json:"application,omitempty"`
 	// Task piece length.
-	PieceLength uint64 `protobuf:"varint,3,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
+	PieceLength uint64 `protobuf:"varint,4,opt,name=piece_length,json=pieceLength,proto3" json:"piece_length,omitempty"`
 	// File path to be exported.
-	OutputPath *string `protobuf:"bytes,4,opt,name=output_path,json=outputPath,proto3,oneof" json:"output_path,omitempty"`
+	OutputPath *string `protobuf:"bytes,5,opt,name=output_path,json=outputPath,proto3,oneof" json:"output_path,omitempty"`
 	// Download timeout.
-	Timeout *durationpb.Duration `protobuf:"bytes,5,opt,name=timeout,proto3,oneof" json:"timeout,omitempty"`
+	Timeout *durationpb.Duration `protobuf:"bytes,6,opt,name=timeout,proto3,oneof" json:"timeout,omitempty"`
 }
 
 func (x *RegisterPersistentCachePeerRequest) Reset() {
@@ -1646,6 +1650,13 @@ func (*RegisterPersistentCachePeerRequest) Descriptor() ([]byte, []int) {
 	return file_pkg_apis_scheduler_v2_scheduler_proto_rawDescGZIP(), []int{24}
 }
 
+func (x *RegisterPersistentCachePeerRequest) GetPersistent() bool {
+	if x != nil {
+		return x.Persistent
+	}
+	return false
+}
+
 func (x *RegisterPersistentCachePeerRequest) GetTag() string {
 	if x != nil && x.Tag != nil {
 		return *x.Tag
@@ -3036,20 +3047,22 @@ var file_pkg_apis_scheduler_v2_scheduler_proto_rawDesc = []byte{
 	0x73, 0x74, 0x73, 0x22, 0x35, 0x0a, 0x11, 0x44, 0x65, 0x6c, 0x65, 0x74, 0x65, 0x48, 0x6f, 0x73,
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+	0x10, 0x01, 0x52, 0x06, 0x68, 0x6f, 0x73, 0x74, 0x49, 0x64, 0x22, 0xce, 0x02, 0x0a, 0x22, 0x52,
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+	0x74, 0x12, 0x1e, 0x0a, 0x0a, 0x70, 0x65, 0x72, 0x73, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x74, 0x18,
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+	0x74, 0x12, 0x15, 0x0a, 0x03, 0x74, 0x61, 0x67, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x48, 0x00,
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+	0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x48, 0x01, 0x52,
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+	0x04, 0x20, 0x01, 0x28, 0x04, 0x42, 0x07, 0xfa, 0x42, 0x04, 0x32, 0x02, 0x28, 0x01, 0x52, 0x0b,
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+	0x07, 0x74, 0x69, 0x6d, 0x65, 0x6f, 0x75, 0x74, 0x18, 0x06, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x19,
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 	0x2e, 0x44, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x48, 0x03, 0x52, 0x07, 0x74, 0x69, 0x6d,
 	0x65, 0x6f, 0x75, 0x74, 0x88, 0x01, 0x01, 0x42, 0x06, 0x0a, 0x04, 0x5f, 0x74, 0x61, 0x67, 0x42,
diff --git a/pkg/apis/scheduler/v2/scheduler.pb.validate.go b/pkg/apis/scheduler/v2/scheduler.pb.validate.go
index 330f649..9baaec3 100644
--- a/pkg/apis/scheduler/v2/scheduler.pb.validate.go
+++ b/pkg/apis/scheduler/v2/scheduler.pb.validate.go
@@ -3869,6 +3869,8 @@ func (m *RegisterPersistentCachePeerRequest) validate(all bool) error {
 
 	var errors []error
 
+	// no validation rules for Persistent
+
 	if m.GetPieceLength() < 1 {
 		err := RegisterPersistentCachePeerRequestValidationError{
 			field:  "PieceLength",
diff --git a/pkg/apis/scheduler/v2/scheduler.proto b/pkg/apis/scheduler/v2/scheduler.proto
index dd4b89b..a875f99 100644
--- a/pkg/apis/scheduler/v2/scheduler.proto
+++ b/pkg/apis/scheduler/v2/scheduler.proto
@@ -226,16 +226,20 @@ message DeleteHostRequest{
 
 // RegisterPersistentCachePeerRequest represents persistent cache peer registered request of AnnouncePersistentCachePeerRequest.
 message RegisterPersistentCachePeerRequest {
+  // Persistent represents whether the persistent cache task is persistent.
+  // If the persistent cache task is persistent, the persistent cache peer will
+  // not be deleted when dfdaemon runs garbage collection.
+  bool persistent = 1;
   // Tag is used to distinguish different persistent cache tasks.
-  optional string tag = 1;
+  optional string tag = 2;
   // Application of task.
-  optional string application = 2;
+  optional string application = 3;
   // Task piece length.
-  uint64 piece_length = 3 [(validate.rules).uint64.gte = 1];
+  uint64 piece_length = 4 [(validate.rules).uint64.gte = 1];
   // File path to be exported.
-  optional string output_path = 4 [(validate.rules).string = {min_len: 1, ignore_empty: true}];
+  optional string output_path = 5 [(validate.rules).string = {min_len: 1, ignore_empty: true}];
   // Download timeout.
-  optional google.protobuf.Duration timeout = 5;
+  optional google.protobuf.Duration timeout = 6;
 }
 
 // DownloadPersistentCachePeerStartedRequest represents persistent cache peer download started request of AnnouncePersistentCachePeerRequest.
diff --git a/proto/scheduler.proto b/proto/scheduler.proto
index 0f27370..1888215 100644
--- a/proto/scheduler.proto
+++ b/proto/scheduler.proto
@@ -217,16 +217,20 @@ message DeleteHostRequest{
 
 // RegisterPersistentCachePeerRequest represents persistent cache peer registered request of AnnouncePersistentCachePeerRequest.
 message RegisterPersistentCachePeerRequest {
+  // Persistent represents whether the persistent cache task is persistent.
+  // If the persistent cache task is persistent, the persistent cache peer will
+  // not be deleted when dfdaemon runs garbage collection.
+  bool persistent = 1;
   // Tag is used to distinguish different persistent cache tasks.
-  optional string tag = 1;
+  optional string tag = 2;
   // Application of task.
-  optional string application = 2;
+  optional string application = 3;
   // Task piece length.
-  uint64 piece_length = 3;
+  uint64 piece_length = 4;
   // File path to be exported.
-  optional string output_path = 4;
+  optional string output_path = 5;
   // Download timeout.
-  optional google.protobuf.Duration timeout = 5;
+  optional google.protobuf.Duration timeout = 6;
 }
 
 // DownloadPersistentCachePeerStartedRequest represents persistent cache peer download started request of AnnouncePersistentCachePeerRequest.
diff --git a/src/descriptor.bin b/src/descriptor.bin
index 7751b93..014bdba 100644
Binary files a/src/descriptor.bin and b/src/descriptor.bin differ
diff --git a/src/scheduler.v2.rs b/src/scheduler.v2.rs
index c126cad..1a93e5c 100644
--- a/src/scheduler.v2.rs
+++ b/src/scheduler.v2.rs
@@ -334,20 +334,25 @@ pub struct DeleteHostRequest {
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct RegisterPersistentCachePeerRequest {
+    /// Persistent represents whether the persistent cache task is persistent.
+    /// If the persistent cache task is persistent, the persistent cache peer will
+    /// not be deleted when dfdaemon runs garbage collection.
+    #[prost(bool, tag = "1")]
+    pub persistent: bool,
     /// Tag is used to distinguish different persistent cache tasks.
-    #[prost(string, optional, tag = "1")]
+    #[prost(string, optional, tag = "2")]
     pub tag: ::core::option::Option<::prost::alloc::string::String>,
     /// Application of task.
-    #[prost(string, optional, tag = "2")]
+    #[prost(string, optional, tag = "3")]
     pub application: ::core::option::Option<::prost::alloc::string::String>,
     /// Task piece length.
-    #[prost(uint64, tag = "3")]
+    #[prost(uint64, tag = "4")]
     pub piece_length: u64,
     /// File path to be exported.
-    #[prost(string, optional, tag = "4")]
+    #[prost(string, optional, tag = "5")]
     pub output_path: ::core::option::Option<::prost::alloc::string::String>,
     /// Download timeout.
-    #[prost(message, optional, tag = "5")]
+    #[prost(message, optional, tag = "6")]
     pub timeout: ::core::option::Option<::prost_wkt_types::Duration>,
 }
 /// DownloadPersistentCachePeerStartedRequest represents persistent cache peer download started request of AnnouncePersistentCachePeerRequest.