diff --git a/src/main/java/org/tikv/common/region/RegionManager.java b/src/main/java/org/tikv/common/region/RegionManager.java
index ada9bb73052..1556f5d2a95 100644
--- a/src/main/java/org/tikv/common/region/RegionManager.java
+++ b/src/main/java/org/tikv/common/region/RegionManager.java
@@ -94,7 +94,7 @@ public void invalidateAll() {
   }
 
   public TiRegion getRegionByKey(ByteString key) {
-    return getRegionByKey(key, ConcreteBackOffer.newGetBackOff());
+    return getRegionByKey(key, defaultBackOff());
   }
 
   public TiRegion getRegionByKey(ByteString key, BackOffer backOffer) {
@@ -124,7 +124,7 @@ public TiRegion getRegionByKey(ByteString key, BackOffer backOffer) {
   // Consider region A, B. After merge of (A, B) -> A, region ID B does not exist.
   // This request is unrecoverable.
   public TiRegion getRegionById(long regionId) {
-    BackOffer backOffer = ConcreteBackOffer.newGetBackOff();
+    BackOffer backOffer = defaultBackOff();
     TiRegion region = cache.getRegionById(regionId);
     if (region == null) {
       Pair<Metapb.Region, Metapb.Peer> regionAndLeader =
@@ -144,7 +144,7 @@ public Pair<TiRegion, TiStore> getRegionStorePairByKey(ByteString key) {
   }
 
   public Pair<TiRegion, TiStore> getRegionStorePairByKey(ByteString key, TiStoreType storeType) {
-    return getRegionStorePairByKey(key, storeType, ConcreteBackOffer.newGetBackOff());
+    return getRegionStorePairByKey(key, storeType, defaultBackOff());
   }
 
   public Pair<TiRegion, TiStore> getRegionStorePairByKey(
@@ -216,7 +216,7 @@ public TiStore getStoreById(long id, BackOffer backOffer) {
   }
 
   public TiStore getStoreById(long id) {
-    return getStoreById(id, ConcreteBackOffer.newGetBackOff());
+    return getStoreById(id, defaultBackOff());
   }
 
   public void onRegionStale(TiRegion region) {
@@ -264,4 +264,8 @@ public void invalidateStore(long storeId) {
   public void invalidateRegion(TiRegion region) {
     cache.invalidateRegion(region);
   }
+
+  private BackOffer defaultBackOff() {
+    return ConcreteBackOffer.newCustomBackOff(conf.getRawKVDefaultBackoffInMS());
+  }
 }
diff --git a/src/main/java/org/tikv/common/region/RegionStoreClient.java b/src/main/java/org/tikv/common/region/RegionStoreClient.java
index 29d3bdc64d9..1c0632d5b78 100644
--- a/src/main/java/org/tikv/common/region/RegionStoreClient.java
+++ b/src/main/java/org/tikv/common/region/RegionStoreClient.java
@@ -1302,19 +1302,39 @@ public synchronized RegionStoreClient build(ByteString key) throws GrpcException
       return build(key, TiStoreType.TiKV);
     }
 
+    public synchronized RegionStoreClient build(ByteString key, BackOffer backOffer)
+        throws GrpcException {
+      return build(key, TiStoreType.TiKV, backOffer);
+    }
+
     public synchronized RegionStoreClient build(ByteString key, TiStoreType storeType)
         throws GrpcException {
-      Pair<TiRegion, TiStore> pair = regionManager.getRegionStorePairByKey(key, storeType);
+      return build(key, storeType, defaultBackOff());
+    }
+
+    public synchronized RegionStoreClient build(
+        ByteString key, TiStoreType storeType, BackOffer backOffer) throws GrpcException {
+      Pair<TiRegion, TiStore> pair =
+          regionManager.getRegionStorePairByKey(key, storeType, backOffer);
       return build(pair.first, pair.second, storeType);
     }
 
     public synchronized RegionStoreClient build(TiRegion region) throws GrpcException {
-      TiStore store = regionManager.getStoreById(region.getLeader().getStoreId());
+      return build(region, defaultBackOff());
+    }
+
+    public synchronized RegionStoreClient build(TiRegion region, BackOffer backOffer)
+        throws GrpcException {
+      TiStore store = regionManager.getStoreById(region.getLeader().getStoreId(), backOffer);
       return build(region, store, TiStoreType.TiKV);
     }
 
     public RegionManager getRegionManager() {
       return regionManager;
     }
+
+    private BackOffer defaultBackOff() {
+      return ConcreteBackOffer.newCustomBackOff(conf.getRawKVDefaultBackoffInMS());
+    }
   }
 }
diff --git a/src/main/java/org/tikv/common/util/BackOffer.java b/src/main/java/org/tikv/common/util/BackOffer.java
index 01926d6d42b..7d7513635f7 100644
--- a/src/main/java/org/tikv/common/util/BackOffer.java
+++ b/src/main/java/org/tikv/common/util/BackOffer.java
@@ -20,7 +20,6 @@
 public interface BackOffer {
   // Back off types.
   int seconds = 1000;
-  int COP_BUILD_TASK_MAX_BACKOFF = 5 * seconds;
   int TSO_MAX_BACKOFF = 5 * seconds;
   int SCANNER_NEXT_MAX_BACKOFF = 40 * seconds;
   int BATCH_GET_MAX_BACKOFF = 40 * seconds;
diff --git a/src/main/java/org/tikv/raw/RawKVClient.java b/src/main/java/org/tikv/raw/RawKVClient.java
index bef0fae4f1a..2b30dbef9c7 100644
--- a/src/main/java/org/tikv/raw/RawKVClient.java
+++ b/src/main/java/org/tikv/raw/RawKVClient.java
@@ -125,7 +125,7 @@ public void put(ByteString key, ByteString value, long ttl) {
     try {
       BackOffer backOffer = defaultBackOff();
       while (true) {
-        RegionStoreClient client = clientBuilder.build(key);
+        RegionStoreClient client = clientBuilder.build(key, backOffer);
         try {
           client.rawPut(backOffer, key, value, ttl, atomicForCAS);
           RAW_REQUEST_SUCCESS.labels(label).inc();
@@ -211,7 +211,7 @@ public void compareAndSet(
     try {
       BackOffer backOffer = defaultBackOff();
       while (true) {
-        RegionStoreClient client = clientBuilder.build(key);
+        RegionStoreClient client = clientBuilder.build(key, backOffer);
         try {
           client.rawCompareAndSet(backOffer, key, prevValue, value, ttl);
           RAW_REQUEST_SUCCESS.labels(label).inc();
@@ -269,7 +269,7 @@ public Optional<ByteString> get(ByteString key) {
     try {
       BackOffer backOffer = defaultBackOff();
       while (true) {
-        RegionStoreClient client = clientBuilder.build(key);
+        RegionStoreClient client = clientBuilder.build(key, backOffer);
         try {
           Optional<ByteString> result = client.rawGet(defaultBackOff(), key);
           RAW_REQUEST_SUCCESS.labels(label).inc();
@@ -342,7 +342,7 @@ public Optional<Long> getKeyTTL(ByteString key) {
     try {
       BackOffer backOffer = defaultBackOff();
       while (true) {
-        RegionStoreClient client = clientBuilder.build(key);
+        RegionStoreClient client = clientBuilder.build(key, backOffer);
         try {
           Optional<Long> result = client.rawGetKeyTTL(defaultBackOff(), key);
           RAW_REQUEST_SUCCESS.labels(label).inc();
@@ -590,7 +590,7 @@ public void delete(ByteString key) {
     try {
       BackOffer backOffer = defaultBackOff();
       while (true) {
-        RegionStoreClient client = clientBuilder.build(key);
+        RegionStoreClient client = clientBuilder.build(key, backOffer);
         try {
           client.rawDelete(defaultBackOff(), key, atomicForCAS);
           RAW_REQUEST_SUCCESS.labels(label).inc();
@@ -820,7 +820,7 @@ private List<KvPair> doSendBatchGet(BackOffer backOffer, List<ByteString> keys)
 
   private Pair<List<Batch>, List<KvPair>> doSendBatchGetInBatchesWithRetry(
       BackOffer backOffer, Batch batch) {
-    RegionStoreClient client = clientBuilder.build(batch.getRegion());
+    RegionStoreClient client = clientBuilder.build(batch.getRegion(), backOffer);
     try {
       List<KvPair> partialResult = client.rawBatchGet(backOffer, batch.getKeys());
       return Pair.create(new ArrayList<>(), partialResult);
@@ -860,7 +860,7 @@ private void doSendBatchDelete(BackOffer backOffer, List<ByteString> keys) {
   }
 
   private List<Batch> doSendBatchDeleteInBatchesWithRetry(BackOffer backOffer, Batch batch) {
-    RegionStoreClient client = clientBuilder.build(batch.getRegion());
+    RegionStoreClient client = clientBuilder.build(batch.getRegion(), backOffer);
     try {
       client.rawBatchDelete(backOffer, batch.getKeys(), atomicForCAS);
       return new ArrayList<>();
@@ -910,7 +910,7 @@ private void doSendDeleteRange(BackOffer backOffer, ByteString startKey, ByteStr
   }
 
   private List<DeleteRange> doSendDeleteRangeWithRetry(BackOffer backOffer, DeleteRange range) {
-    try (RegionStoreClient client = clientBuilder.build(range.getRegion())) {
+    try (RegionStoreClient client = clientBuilder.build(range.getRegion(), backOffer)) {
       client.setTimeout(conf.getScanTimeout());
       client.rawDeleteRange(backOffer, range.getStartKey(), range.getEndKey());
       return new ArrayList<>();