diff --git a/src/kv/key.rs b/src/kv/key.rs
index 1b4f060..ae6f364 100644
--- a/src/kv/key.rs
+++ b/src/kv/key.rs
@@ -17,6 +17,7 @@ use super::HexRepr;
 use crate::kv::codec::BytesEncoder;
 use crate::kv::codec::{self};
 use crate::proto::kvrpcpb;
+use crate::proto::kvrpcpb::KvPair;
 
 const _PROPTEST_KEY_MAX: usize = 1024 * 2; // 2 KB
 
@@ -80,6 +81,20 @@ impl AsRef<Key> for kvrpcpb::Mutation {
     }
 }
 
+pub struct KvPairTTL(pub KvPair, pub u64);
+
+impl AsRef<Key> for KvPairTTL {
+    fn as_ref(&self) -> &Key {
+        self.0.key.as_ref()
+    }
+}
+
+impl From<KvPairTTL> for (KvPair, u64) {
+    fn from(value: KvPairTTL) -> Self {
+        (value.0.clone(), value.1)
+    }
+}
+
 impl Key {
     /// The empty key.
     pub const EMPTY: Self = Key(Vec::new());
diff --git a/src/kv/mod.rs b/src/kv/mod.rs
index 489110e..c48f476 100644
--- a/src/kv/mod.rs
+++ b/src/kv/mod.rs
@@ -11,6 +11,7 @@ mod value;
 pub use bound_range::BoundRange;
 pub use bound_range::IntoOwnedRange;
 pub use key::Key;
+pub use key::KvPairTTL;
 pub use kvpair::KvPair;
 pub use value::Value;
 
diff --git a/src/raw/client.rs b/src/raw/client.rs
index e885b4e..da84eb9 100644
--- a/src/raw/client.rs
+++ b/src/raw/client.rs
@@ -880,7 +880,7 @@ mod tests {
     async fn test_batch_put_with_ttl() -> Result<()> {
         let pd_client = Arc::new(MockPdClient::new(MockKvClient::with_dispatch_hook(
             move |req: &dyn Any| {
-                if let Some(_) = req.downcast_ref::<kvrpcpb::RawBatchPutRequest>() {
+                if req.downcast_ref::<kvrpcpb::RawBatchPutRequest>().is_some() {
                     let resp = kvrpcpb::RawBatchPutResponse {
                         ..Default::default()
                     };
@@ -898,8 +898,8 @@ mod tests {
             keyspace: Keyspace::Enable { keyspace_id: 0 },
         };
         let pairs = vec![
-            KvPair(vec![11].into(), vec![12].into()),
-            KvPair(vec![11].into(), vec![12].into()),
+            KvPair(vec![11].into(), vec![12]),
+            KvPair(vec![11].into(), vec![12]),
         ];
         let ttls = vec![0, 0];
         assert!(client.batch_put_with_ttl(pairs, ttls).await.is_ok());
diff --git a/src/raw/requests.rs b/src/raw/requests.rs
index f6e876d..df99e93 100644
--- a/src/raw/requests.rs
+++ b/src/raw/requests.rs
@@ -1,7 +1,6 @@
 // Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 use std::any::Any;
-use std::collections::HashMap;
 use std::ops::Range;
 use std::sync::Arc;
 use std::time::Duration;
@@ -9,10 +8,12 @@ use std::time::Duration;
 use async_trait::async_trait;
 use futures::stream::BoxStream;
 use futures::StreamExt;
+
 use tonic::transport::Channel;
 
 use super::RawRpcRequest;
 use crate::collect_single;
+use crate::kv::KvPairTTL;
 use crate::pd::PdClient;
 use crate::proto::kvrpcpb;
 use crate::proto::metapb;
@@ -198,31 +199,19 @@ impl Shardable for kvrpcpb::RawBatchPutRequest {
         &self,
         pd_client: &Arc<impl PdClient>,
     ) -> BoxStream<'static, Result<(Self::Shard, RegionStore)>> {
-        // Maintain a map of the pair and its associated ttl
         let kvs = self.pairs.clone();
-        let kv_pair = kvs.into_iter().map(Into::<KvPair>::into);
-        let kv_ttl = kv_pair.zip(self.ttls.clone()).collect::<HashMap<_, _>>();
-        let mut pairs = self.pairs.clone();
-        pairs.sort_by(|a, b| a.key.cmp(&b.key));
-        store_stream_for_keys(
-            pairs.into_iter().map(Into::<KvPair>::into),
-            pd_client.clone(),
-        )
-        .map(move |r| {
-            let s = r.map(|(kv, store)| {
-                let kv_ttls = kv
-                    .into_iter()
-                    .map(|k: KvPair| {
-                        let kv: kvrpcpb::KvPair = k.clone().into();
-                        let ttl = *kv_ttl.get(&k).unwrap();
-                        (kv, ttl)
-                    })
-                    .collect::<Vec<_>>();
-                (kv_ttls, store)
-            });
-            s
-        })
-        .boxed()
+        let ttls = self.ttls.clone();
+        let mut kv_ttl: Vec<KvPairTTL> = kvs
+            .iter()
+            .zip(ttls)
+            .map(|(kv, ttl)| KvPairTTL(kv.clone(), ttl))
+            .collect();
+        kv_ttl.sort_by(|a, b| a.0.key.clone().cmp(&b.0.key));
+        store_stream_for_keys(kv_ttl.into_iter(), pd_client.clone())
+            .map(move |r| {
+                r.map(|(kv, store): (Vec<(kvrpcpb::KvPair, u64)>, RegionStore)| (kv, store))
+            })
+            .boxed()
     }
 
     fn apply_shard(&mut self, shard: Self::Shard, store: &RegionStore) -> Result<()> {
@@ -580,6 +569,7 @@ impl HasLocks for kvrpcpb::RawCoprocessorResponse {}
 #[cfg(test)]
 mod test {
     use std::any::Any;
+    use std::collections::HashMap;
     use std::ops::Deref;
     use std::sync::Mutex;
 
@@ -592,7 +582,6 @@ mod test {
     use crate::request::Keyspace;
     use crate::request::Plan;
 
-
     #[rstest::rstest]
     #[case(Keyspace::Disable)]
     #[case(Keyspace::Enable { keyspace_id: 0 })]
@@ -639,14 +628,11 @@ mod test {
 
     #[tokio::test]
     async fn test_raw_batch_put() -> Result<()> {
-        let region1_kvs = vec![KvPair(vec![9].into(), vec![12].into())];
+        let region1_kvs = vec![KvPair(vec![9].into(), vec![12])];
         let region1_ttls = vec![0];
         let region2_kvs = vec![
-            KvPair(vec![11].into(), vec![12].into()),
-            KvPair(
-                "FFF".to_string().as_bytes().to_vec().into(),
-                vec![12].into(),
-            ),
+            KvPair(vec![11].into(), vec![12]),
+            KvPair("FFF".to_string().as_bytes().to_vec().into(), vec![12]),
         ];
         let region2_ttls = vec![0, 1];