diff --git a/include/libs/sync/syncTools.h b/include/libs/sync/syncTools.h
index 0340bf026b..e6147a2e0e 100644
--- a/include/libs/sync/syncTools.h
+++ b/include/libs/sync/syncTools.h
@@ -624,6 +624,9 @@ int32_t syncNodeOnRequestVoteReplySnapshotCb(SSyncNode* ths, SyncRequestVoteRepl
 int32_t syncNodeOnAppendEntriesSnapshotCb(SSyncNode* ths, SyncAppendEntries* pMsg);
 int32_t syncNodeOnAppendEntriesReplySnapshotCb(SSyncNode* ths, SyncAppendEntriesReply* pMsg);
 
+int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatch* pMsg);
+int32_t syncNodeOnAppendEntriesReplySnapshot2Cb(SSyncNode* ths, SyncAppendEntriesReply* pMsg);
+
 int32_t syncNodeOnSnapshotSendCb(SSyncNode* ths, SyncSnapshotSend* pMsg);
 int32_t syncNodeOnSnapshotRspCb(SSyncNode* ths, SyncSnapshotRsp* pMsg);
 
diff --git a/source/dnode/vnode/src/vnd/vnodeSync.c b/source/dnode/vnode/src/vnd/vnodeSync.c
index 201f4a4180..b8f1a5238f 100644
--- a/source/dnode/vnode/src/vnd/vnodeSync.c
+++ b/source/dnode/vnode/src/vnd/vnodeSync.c
@@ -256,70 +256,133 @@ int32_t vnodeProcessSyncReq(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
 
     SRpcMsg *pRpcMsg = pMsg;
 
-    if (pRpcMsg->msgType == TDMT_SYNC_TIMEOUT) {
-      SyncTimeout *pSyncMsg = syncTimeoutFromRpcMsg2(pRpcMsg);
-      assert(pSyncMsg != NULL);
+    // ToDo: ugly! use function pointer
+    // use different strategy
+    if (syncNodeSnapshotEnable(pSyncNode)) {
+      if (pRpcMsg->msgType == TDMT_SYNC_TIMEOUT) {
+        SyncTimeout *pSyncMsg = syncTimeoutFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnTimeoutCb(pSyncNode, pSyncMsg);
+        syncTimeoutDestroy(pSyncMsg);
 
-      ret = syncNodeOnTimeoutCb(pSyncNode, pSyncMsg);
-      syncTimeoutDestroy(pSyncMsg);
+      } else if (pRpcMsg->msgType == TDMT_SYNC_PING) {
+        SyncPing *pSyncMsg = syncPingFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnPingCb(pSyncNode, pSyncMsg);
+        syncPingDestroy(pSyncMsg);
 
-    } else if (pRpcMsg->msgType == TDMT_SYNC_PING) {
-      SyncPing *pSyncMsg = syncPingFromRpcMsg2(pRpcMsg);
-      assert(pSyncMsg != NULL);
+      } else if (pRpcMsg->msgType == TDMT_SYNC_PING_REPLY) {
+        SyncPingReply *pSyncMsg = syncPingReplyFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnPingReplyCb(pSyncNode, pSyncMsg);
+        syncPingReplyDestroy(pSyncMsg);
 
-      ret = syncNodeOnPingCb(pSyncNode, pSyncMsg);
-      syncPingDestroy(pSyncMsg);
+      } else if (pRpcMsg->msgType == TDMT_SYNC_CLIENT_REQUEST) {
+        SyncClientRequest *pSyncMsg = syncClientRequestFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnClientRequestCb(pSyncNode, pSyncMsg, NULL);
+        syncClientRequestDestroy(pSyncMsg);
 
-    } else if (pRpcMsg->msgType == TDMT_SYNC_PING_REPLY) {
-      SyncPingReply *pSyncMsg = syncPingReplyFromRpcMsg2(pRpcMsg);
-      assert(pSyncMsg != NULL);
+      } else if (pRpcMsg->msgType == TDMT_SYNC_REQUEST_VOTE) {
+        SyncRequestVote *pSyncMsg = syncRequestVoteFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnRequestVoteCb(pSyncNode, pSyncMsg);
+        syncRequestVoteDestroy(pSyncMsg);
 
-      ret = syncNodeOnPingReplyCb(pSyncNode, pSyncMsg);
-      syncPingReplyDestroy(pSyncMsg);
+      } else if (pRpcMsg->msgType == TDMT_SYNC_REQUEST_VOTE_REPLY) {
+        SyncRequestVoteReply *pSyncMsg = syncRequestVoteReplyFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnRequestVoteReplyCb(pSyncNode, pSyncMsg);
+        syncRequestVoteReplyDestroy(pSyncMsg);
 
-    } else if (pRpcMsg->msgType == TDMT_SYNC_CLIENT_REQUEST) {
-      SyncClientRequest *pSyncMsg = syncClientRequestFromRpcMsg2(pRpcMsg);
-      assert(pSyncMsg != NULL);
+      } else if (pRpcMsg->msgType == TDMT_SYNC_APPEND_ENTRIES) {
+        SyncAppendEntries *pSyncMsg = syncAppendEntriesFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnAppendEntriesCb(pSyncNode, pSyncMsg);
+        syncAppendEntriesDestroy(pSyncMsg);
 
-      ret = syncNodeOnClientRequestCb(pSyncNode, pSyncMsg, NULL);
-      syncClientRequestDestroy(pSyncMsg);
+      } else if (pRpcMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
+        SyncAppendEntriesReply *pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnAppendEntriesReplyCb(pSyncNode, pSyncMsg);
+        syncAppendEntriesReplyDestroy(pSyncMsg);
 
-    } else if (pRpcMsg->msgType == TDMT_SYNC_REQUEST_VOTE) {
-      SyncRequestVote *pSyncMsg = syncRequestVoteFromRpcMsg2(pRpcMsg);
-      assert(pSyncMsg != NULL);
+      } else if (pRpcMsg->msgType == TDMT_SYNC_SET_VNODE_STANDBY) {
+        ret = vnodeSetStandBy(pVnode);
+        if (ret != 0 && terrno != 0) ret = terrno;
+        SRpcMsg rsp = {.code = ret, .info = pMsg->info};
+        tmsgSendRsp(&rsp);
+      } else {
+        vError("==vnodeProcessSyncReq== error msg type:%d", pRpcMsg->msgType);
+        ret = -1;
+      }
 
-      ret = syncNodeOnRequestVoteCb(pSyncNode, pSyncMsg);
-      syncRequestVoteDestroy(pSyncMsg);
-
-    } else if (pRpcMsg->msgType == TDMT_SYNC_REQUEST_VOTE_REPLY) {
-      SyncRequestVoteReply *pSyncMsg = syncRequestVoteReplyFromRpcMsg2(pRpcMsg);
-      assert(pSyncMsg != NULL);
-
-      ret = syncNodeOnRequestVoteReplyCb(pSyncNode, pSyncMsg);
-      syncRequestVoteReplyDestroy(pSyncMsg);
-
-    } else if (pRpcMsg->msgType == TDMT_SYNC_APPEND_ENTRIES) {
-      SyncAppendEntries *pSyncMsg = syncAppendEntriesFromRpcMsg2(pRpcMsg);
-      assert(pSyncMsg != NULL);
-
-      ret = syncNodeOnAppendEntriesCb(pSyncNode, pSyncMsg);
-      syncAppendEntriesDestroy(pSyncMsg);
-
-    } else if (pRpcMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
-      SyncAppendEntriesReply *pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pRpcMsg);
-      assert(pSyncMsg != NULL);
-
-      ret = syncNodeOnAppendEntriesReplyCb(pSyncNode, pSyncMsg);
-      syncAppendEntriesReplyDestroy(pSyncMsg);
-
-    } else if (pRpcMsg->msgType == TDMT_SYNC_SET_VNODE_STANDBY) {
-      ret = vnodeSetStandBy(pVnode);
-      if (ret != 0 && terrno != 0) ret = terrno;
-      SRpcMsg rsp = {.code = ret, .info = pMsg->info};
-      tmsgSendRsp(&rsp);
     } else {
-      vError("==vnodeProcessSyncReq== error msg type:%d", pRpcMsg->msgType);
-      ret = -1;
+      // use wal first strategy
+
+      if (pRpcMsg->msgType == TDMT_SYNC_TIMEOUT) {
+        SyncTimeout *pSyncMsg = syncTimeoutFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnTimeoutCb(pSyncNode, pSyncMsg);
+        syncTimeoutDestroy(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_PING) {
+        SyncPing *pSyncMsg = syncPingFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnPingCb(pSyncNode, pSyncMsg);
+        syncPingDestroy(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_PING_REPLY) {
+        SyncPingReply *pSyncMsg = syncPingReplyFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnPingReplyCb(pSyncNode, pSyncMsg);
+        syncPingReplyDestroy(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_CLIENT_REQUEST) {
+        SyncClientRequest *pSyncMsg = syncClientRequestFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnClientRequestCb(pSyncNode, pSyncMsg, NULL);
+        syncClientRequestDestroy(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_CLIENT_REQUEST_BATCH) {
+        SyncClientRequestBatch *pSyncMsg = syncClientRequestBatchFromRpcMsg(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnClientRequestBatchCb(pSyncNode, pSyncMsg);
+        syncClientRequestBatchDestroyDeep(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_REQUEST_VOTE) {
+        SyncRequestVote *pSyncMsg = syncRequestVoteFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnRequestVoteCb(pSyncNode, pSyncMsg);
+        syncRequestVoteDestroy(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_REQUEST_VOTE_REPLY) {
+        SyncRequestVoteReply *pSyncMsg = syncRequestVoteReplyFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnRequestVoteReplyCb(pSyncNode, pSyncMsg);
+        syncRequestVoteReplyDestroy(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_BATCH) {
+        SyncAppendEntriesBatch *pSyncMsg = syncAppendEntriesBatchFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnAppendEntriesSnapshot2Cb(pSyncNode, pSyncMsg);
+        syncAppendEntriesBatchDestroy(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
+        SyncAppendEntriesReply *pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pRpcMsg);
+        ASSERT(pSyncMsg != NULL);
+        ret = syncNodeOnAppendEntriesReplySnapshot2Cb(pSyncNode, pSyncMsg);
+        syncAppendEntriesReplyDestroy(pSyncMsg);
+
+      } else if (pRpcMsg->msgType == TDMT_SYNC_SET_VNODE_STANDBY) {
+        ret = vnodeSetStandBy(pVnode);
+        if (ret != 0 && terrno != 0) ret = terrno;
+        SRpcMsg rsp = {.code = ret, .info = pMsg->info};
+        tmsgSendRsp(&rsp);
+      } else {
+        vError("==vnodeProcessSyncReq== error msg type:%d", pRpcMsg->msgType);
+        ret = -1;
+      }
     }
 
     syncNodeRelease(pSyncNode);
diff --git a/source/libs/transport/inc/transComm.h b/source/libs/transport/inc/transComm.h
index 21e7f7c7af..8db619270c 100644
--- a/source/libs/transport/inc/transComm.h
+++ b/source/libs/transport/inc/transComm.h
@@ -96,7 +96,7 @@ typedef void* queue[2];
 #define QUEUE_DATA(e, type, field) ((type*)((void*)((char*)(e)-offsetof(type, field))))
 
 #define TRANS_RETRY_COUNT_LIMIT 100  // retry count limit
-#define TRANS_RETRY_INTERVAL 200     // ms retry interval
+#define TRANS_RETRY_INTERVAL 30      // ms retry interval
 #define TRANS_CONN_TIMEOUT 3         // connect timeout
 
 typedef SRpcMsg      STransMsg;