diff --git a/docs/zh/14-reference/11-docker/index.md b/docs/zh/14-reference/11-docker/index.md
index 58bbe1e117..086d72940c 100644
--- a/docs/zh/14-reference/11-docker/index.md
+++ b/docs/zh/14-reference/11-docker/index.md
@@ -119,7 +119,7 @@ taos -h tdengine -P 6030
 FROM ubuntu:20.04
 RUN apt-get update && apt-get install -y wget
 ENV TDENGINE_VERSION=3.0.0.0
-RUN wget -c https://www.tdengine.com/assets-download/TDengine-client-${TDENGINE_VERSION}-Linux-x64.tar.gz \
+RUN wget -c https://www.tdengine.com/assets-download/3.0/TDengine-client-${TDENGINE_VERSION}-Linux-x64.tar.gz \
    && tar xvf TDengine-client-${TDENGINE_VERSION}-Linux-x64.tar.gz \
    && cd TDengine-client-${TDENGINE_VERSION} \
    && ./install_client.sh \
diff --git a/source/libs/sync/inc/syncAppendEntriesReply.h b/source/libs/sync/inc/syncAppendEntriesReply.h
index 09750864d5..199a895961 100644
--- a/source/libs/sync/inc/syncAppendEntriesReply.h
+++ b/source/libs/sync/inc/syncAppendEntriesReply.h
@@ -35,7 +35,7 @@ extern "C" {
 //    /\ Discard(m)
 //    /\ UNCHANGED <<serverVars, candidateVars, logVars, elections>>
 //
-int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, SyncAppendEntriesReply* pMsg);
+int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, const SRpcMsg* pMsg);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/inc/syncMessage.h b/source/libs/sync/inc/syncMessage.h
index 419f9591b3..b9bca4e616 100644
--- a/source/libs/sync/inc/syncMessage.h
+++ b/source/libs/sync/inc/syncMessage.h
@@ -112,24 +112,6 @@ typedef struct SyncAppendEntriesReply {
   int64_t   startTime;
 } SyncAppendEntriesReply;
 
-SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId);
-void                    syncAppendEntriesReplyDestroy(SyncAppendEntriesReply* pMsg);
-void                    syncAppendEntriesReplySerialize(const SyncAppendEntriesReply* pMsg, char* buf, uint32_t bufLen);
-void                    syncAppendEntriesReplyDeserialize(const char* buf, uint32_t len, SyncAppendEntriesReply* pMsg);
-char*                   syncAppendEntriesReplySerialize2(const SyncAppendEntriesReply* pMsg, uint32_t* len);
-SyncAppendEntriesReply* syncAppendEntriesReplyDeserialize2(const char* buf, uint32_t len);
-void                    syncAppendEntriesReply2RpcMsg(const SyncAppendEntriesReply* pMsg, SRpcMsg* pRpcMsg);
-void                    syncAppendEntriesReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntriesReply* pMsg);
-SyncAppendEntriesReply* syncAppendEntriesReplyFromRpcMsg2(const SRpcMsg* pRpcMsg);
-cJSON*                  syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg);
-char*                   syncAppendEntriesReply2Str(const SyncAppendEntriesReply* pMsg);
-
-// for debug ----------------------
-void syncAppendEntriesReplyPrint(const SyncAppendEntriesReply* pMsg);
-void syncAppendEntriesReplyPrint2(char* s, const SyncAppendEntriesReply* pMsg);
-void syncAppendEntriesReplyLog(const SyncAppendEntriesReply* pMsg);
-void syncAppendEntriesReplyLog2(char* s, const SyncAppendEntriesReply* pMsg);
-
 // ---------------------------------------------
 typedef struct SyncHeartbeat {
   uint32_t bytes;
@@ -143,28 +125,8 @@ typedef struct SyncHeartbeat {
   SyncIndex commitIndex;
   SyncTerm  privateTerm;
   SyncTerm  minMatchIndex;
-
 } SyncHeartbeat;
 
-SyncHeartbeat* syncHeartbeatBuild(int32_t vgId);
-void           syncHeartbeatDestroy(SyncHeartbeat* pMsg);
-void           syncHeartbeatSerialize(const SyncHeartbeat* pMsg, char* buf, uint32_t bufLen);
-void           syncHeartbeatDeserialize(const char* buf, uint32_t len, SyncHeartbeat* pMsg);
-char*          syncHeartbeatSerialize2(const SyncHeartbeat* pMsg, uint32_t* len);
-SyncHeartbeat* syncHeartbeatDeserialize2(const char* buf, uint32_t len);
-void           syncHeartbeat2RpcMsg(const SyncHeartbeat* pMsg, SRpcMsg* pRpcMsg);
-void           syncHeartbeatFromRpcMsg(const SRpcMsg* pRpcMsg, SyncHeartbeat* pMsg);
-SyncHeartbeat* syncHeartbeatFromRpcMsg2(const SRpcMsg* pRpcMsg);
-cJSON*         syncHeartbeat2Json(const SyncHeartbeat* pMsg);
-char*          syncHeartbeat2Str(const SyncHeartbeat* pMsg);
-
-// for debug ----------------------
-void syncHeartbeatPrint(const SyncHeartbeat* pMsg);
-void syncHeartbeatPrint2(char* s, const SyncHeartbeat* pMsg);
-void syncHeartbeatLog(const SyncHeartbeat* pMsg);
-void syncHeartbeatLog2(char* s, const SyncHeartbeat* pMsg);
-
-// ---------------------------------------------
 typedef struct SyncHeartbeatReply {
   uint32_t bytes;
   int32_t  vgId;
@@ -430,7 +392,7 @@ void syncLocalCmdLog2(char* s, const SyncLocalCmd* pMsg);
 int32_t syncNodeOnRequestVote(SSyncNode* pNode, const SRpcMsg* pMsg);
 int32_t syncNodeOnRequestVoteReply(SSyncNode* pNode, const SRpcMsg* pMsg);
 int32_t syncNodeOnAppendEntries(SSyncNode* pNode, const SRpcMsg* pMsg);
-int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, SyncAppendEntriesReply* pMsg);
+int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, const SRpcMsg* pMsg);
 
 int32_t syncNodeOnPreSnapshot(SSyncNode* ths, SyncPreSnapshot* pMsg);
 int32_t syncNodeOnPreSnapshotReply(SSyncNode* ths, SyncPreSnapshotReply* pMsg);
@@ -438,7 +400,7 @@ int32_t syncNodeOnPreSnapshotReply(SSyncNode* ths, SyncPreSnapshotReply* pMsg);
 int32_t syncNodeOnSnapshot(SSyncNode* ths, SyncSnapshotSend* pMsg);
 int32_t syncNodeOnSnapshotReply(SSyncNode* ths, SyncSnapshotRsp* pMsg);
 
-int32_t syncNodeOnHeartbeat(SSyncNode* ths, SyncHeartbeat* pMsg);
+int32_t syncNodeOnHeartbeat(SSyncNode* ths, const SRpcMsg* pMsg);
 int32_t syncNodeOnHeartbeatReply(SSyncNode* ths, SyncHeartbeatReply* pMsg);
 
 int32_t syncNodeOnClientRequest(SSyncNode* ths, SRpcMsg* pMsg, SyncIndex* pRetIndex);
@@ -452,14 +414,14 @@ ESyncStrategy syncNodeStrategy(SSyncNode* pSyncNode);
 
 const char* syncTimerTypeStr(enum ESyncTimeoutType timerType);
 
-int32_t syncTimeoutBuild(SRpcMsg* pTimeoutRpcMsg, ESyncTimeoutType timeoutType, uint64_t logicClock, int32_t timerMS,
-                         SSyncNode* pNode);
-int32_t syncClientRequestBuildFromRpcMsg(SRpcMsg* pClientRequestRpcMsg, const SRpcMsg* pOriginalRpcMsg, uint64_t seqNum,
-                                         bool isWeak, int32_t vgId);
-int32_t syncClientRequestBuildFromNoopEntry(SRpcMsg* pClientRequestRpcMsg, const SSyncRaftEntry* pEntry, int32_t vgId);
+int32_t syncBuildTimeout(SRpcMsg* pMsg, ESyncTimeoutType ttype, uint64_t logicClock, int32_t ms, SSyncNode* pNode);
+int32_t syncBuildClientRequest(SRpcMsg* pMsg, const SRpcMsg* pOriginalRpc, uint64_t seq, bool isWeak, int32_t vgId);
+int32_t syncBuildClientRequestFromNoopEntry(SRpcMsg* pMsg, const SSyncRaftEntry* pEntry, int32_t vgId);
 int32_t syncBuildRequestVote(SRpcMsg* pMsg, int32_t vgId);
 int32_t syncBuildRequestVoteReply(SRpcMsg* pMsg, int32_t vgId);
 int32_t syncBuildAppendEntries(SRpcMsg* pMsg, int32_t dataLen, int32_t vgId);
+int32_t syncBuildAppendEntriesReply(SRpcMsg* pMsg, int32_t vgId);
+int32_t syncBuildHeartbeat(SRpcMsg* pMsg, int32_t vgId);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/inc/syncReplication.h b/source/libs/sync/inc/syncReplication.h
index c214f7d1de..0ce6c404eb 100644
--- a/source/libs/sync/inc/syncReplication.h
+++ b/source/libs/sync/inc/syncReplication.h
@@ -48,7 +48,7 @@ extern "C" {
 //    /\ UNCHANGED <<serverVars, candidateVars, leaderVars, logVars>>
 
 int32_t syncNodeHeartbeatPeers(SSyncNode* pSyncNode);
-int32_t syncNodeSendHeartbeat(SSyncNode* pSyncNode, const SRaftId* pDestId, const SyncHeartbeat* pMsg);
+int32_t syncNodeSendHeartbeat(SSyncNode* pSyncNode, const SRaftId* pDestId, SRpcMsg* pMsg);
 
 int32_t syncNodeReplicate(SSyncNode* pSyncNode);
 int32_t syncNodeReplicateOne(SSyncNode* pSyncNode, SRaftId* pDestId);
diff --git a/source/libs/sync/src/syncAppendEntries.c b/source/libs/sync/src/syncAppendEntries.c
index 91c8d183e3..ce6aad1983 100644
--- a/source/libs/sync/src/syncAppendEntries.c
+++ b/source/libs/sync/src/syncAppendEntries.c
@@ -138,6 +138,7 @@ void syncLogRecvAppendEntries(SSyncNode* pSyncNode, const SyncAppendEntries* pMs
 
 int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   SyncAppendEntries* pMsg = pRpcMsg->pCont;
+  SRpcMsg            rpcRsp = {0};
 
   // if already drop replica, do not process
   if (!syncNodeInRaftGroup(ths, &(pMsg->srcId))) {
@@ -146,7 +147,13 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   }
 
   // prepare response msg
-  SyncAppendEntriesReply* pReply = syncAppendEntriesReplyBuild(ths->vgId);
+  int32_t code = syncBuildAppendEntriesReply(&rpcRsp, ths->vgId);
+  if (code != 0) {
+    syncLogRecvAppendEntries(ths, pMsg, "build rsp error");
+    goto _IGNORE;
+  }
+
+  SyncAppendEntriesReply* pReply = rpcRsp.pCont;
   pReply->srcId = ths->myRaftId;
   pReply->destId = pMsg->srcId;
   pReply->term = ths->pRaftStore->currentTerm;
@@ -288,7 +295,7 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
   goto _SEND_RESPONSE;
 
 _IGNORE:
-  syncAppendEntriesReplyDestroy(pReply);
+  rpcFreeCont(rpcRsp.pCont);
   return 0;
 
 _SEND_RESPONSE:
@@ -296,10 +303,6 @@ _SEND_RESPONSE:
   syncLogSendAppendEntriesReply(ths, pReply, "");
 
   // send response
-  SRpcMsg rpcMsg;
-  syncAppendEntriesReply2RpcMsg(pReply, &rpcMsg);
-  syncNodeSendMsgById(&pReply->destId, ths, &rpcMsg);
-  syncAppendEntriesReplyDestroy(pReply);
-
+  syncNodeSendMsgById(&pReply->destId, ths, &rpcRsp);
   return 0;
 }
\ No newline at end of file
diff --git a/source/libs/sync/src/syncAppendEntriesReply.c b/source/libs/sync/src/syncAppendEntriesReply.c
index 53d6b5d92f..a6a9389ca6 100644
--- a/source/libs/sync/src/syncAppendEntriesReply.c
+++ b/source/libs/sync/src/syncAppendEntriesReply.c
@@ -73,8 +73,9 @@ static void syncNodeStartSnapshotOnce(SSyncNode* ths, SyncIndex beginIndex, Sync
 #endif
 }
 
-int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, SyncAppendEntriesReply* pMsg) {
-  int32_t ret = 0;
+int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
+  int32_t                 ret = 0;
+  SyncAppendEntriesReply* pMsg = pRpcMsg->pCont;
 
   // if already drop replica, do not process
   if (!syncNodeInRaftGroup(ths, &(pMsg->srcId))) {
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 67b1fed491..88e5fde1b9 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -134,9 +134,7 @@ int32_t syncProcessMsg(int64_t rid, SRpcMsg* pMsg) {
   if (pSyncNode == NULL) return code;
 
   if (pMsg->msgType == TDMT_SYNC_HEARTBEAT) {
-    SyncHeartbeat* pSyncMsg = syncHeartbeatFromRpcMsg2(pMsg);
-    code = syncNodeOnHeartbeat(pSyncNode, pSyncMsg);
-    syncHeartbeatDestroy(pSyncMsg);
+    code = syncNodeOnHeartbeat(pSyncNode, pMsg);
   } else if (pMsg->msgType == TDMT_SYNC_HEARTBEAT_REPLY) {
     SyncHeartbeatReply* pSyncMsg = syncHeartbeatReplyFromRpcMsg2(pMsg);
     code = syncNodeOnHeartbeatReply(pSyncNode, pSyncMsg);
@@ -152,9 +150,7 @@ int32_t syncProcessMsg(int64_t rid, SRpcMsg* pMsg) {
   } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES) {
     syncNodeOnAppendEntries(pSyncNode, pMsg);
   } else if (pMsg->msgType == TDMT_SYNC_APPEND_ENTRIES_REPLY) {
-    SyncAppendEntriesReply* pSyncMsg = syncAppendEntriesReplyFromRpcMsg2(pMsg);
-    code = syncNodeOnAppendEntriesReply(pSyncNode, pSyncMsg);
-    syncAppendEntriesReplyDestroy(pSyncMsg);
+    syncNodeOnAppendEntriesReply(pSyncNode, pMsg);
   } else if (pMsg->msgType == TDMT_SYNC_SNAPSHOT_SEND) {
     SyncSnapshotSend* pSyncMsg = syncSnapshotSendFromRpcMsg2(pMsg);
     code = syncNodeOnSnapshot(pSyncNode, pSyncMsg);
@@ -603,7 +599,7 @@ int32_t syncNodePropose(SSyncNode* pSyncNode, SRpcMsg* pMsg, bool isWeak) {
     SRespStub stub = {.createTime = taosGetTimestampMs(), .rpcMsg = *pMsg};
     uint64_t  seqNum = syncRespMgrAdd(pSyncNode->pSyncRespMgr, &stub);
     SRpcMsg   rpcMsg = {0};
-    int32_t   code = syncClientRequestBuildFromRpcMsg(&rpcMsg, pMsg, seqNum, isWeak, pSyncNode->vgId);
+    int32_t   code = syncBuildClientRequest(&rpcMsg, pMsg, seqNum, isWeak, pSyncNode->vgId);
     if (code != 0) {
       sError("vgId:%d, failed to propose msg while serialize since %s", pSyncNode->vgId, terrstr());
       (void)syncRespMgrDel(pSyncNode->pSyncRespMgr, seqNum);
@@ -1194,6 +1190,7 @@ int32_t syncNodeSendMsgById(const SRaftId* destRaftId, SSyncNode* pSyncNode, SRp
     pSyncNode->syncSendMSg(&epSet, pMsg);
   } else {
     sError("vgId:%d, sync send msg by id error, fp-send-msg is null", pSyncNode->vgId);
+    rpcFreeCont(pMsg->pCont);
     return -1;
   }
 
@@ -1796,7 +1793,7 @@ static void syncNodeEqPingTimer(void* param, void* tmrId) {
   SSyncNode* pNode = param;
   if (atomic_load_64(&pNode->pingTimerLogicClockUser) <= atomic_load_64(&pNode->pingTimerLogicClock)) {
     SRpcMsg rpcMsg = {0};
-    int32_t code = syncTimeoutBuild(&rpcMsg, SYNC_TIMEOUT_PING, atomic_load_64(&pNode->pingTimerLogicClock),
+    int32_t code = syncBuildTimeout(&rpcMsg, SYNC_TIMEOUT_PING, atomic_load_64(&pNode->pingTimerLogicClock),
                                     pNode->pingTimerMS, pNode);
     if (code != 0) {
       sNError(pNode, "failed to build ping msg");
@@ -1826,7 +1823,7 @@ static void syncNodeEqElectTimer(void* param, void* tmrId) {
   SSyncNode*   pNode = pElectTimer->pSyncNode;
 
   SRpcMsg rpcMsg = {0};
-  int32_t code = syncTimeoutBuild(&rpcMsg, SYNC_TIMEOUT_ELECTION, pElectTimer->logicClock, pNode->electTimerMS, pNode);
+  int32_t code = syncBuildTimeout(&rpcMsg, SYNC_TIMEOUT_ELECTION, pElectTimer->logicClock, pNode->electTimerMS, pNode);
 
   if (code != 0) {
     sNError(pNode, "failed to build elect msg");
@@ -1865,7 +1862,7 @@ static void syncNodeEqHeartbeatTimer(void* param, void* tmrId) {
   if (pNode->replicaNum > 1) {
     if (atomic_load_64(&pNode->heartbeatTimerLogicClockUser) <= atomic_load_64(&pNode->heartbeatTimerLogicClock)) {
       SRpcMsg rpcMsg = {0};
-      int32_t code = syncTimeoutBuild(&rpcMsg, SYNC_TIMEOUT_HEARTBEAT, atomic_load_64(&pNode->heartbeatTimerLogicClock),
+      int32_t code = syncBuildTimeout(&rpcMsg, SYNC_TIMEOUT_HEARTBEAT, atomic_load_64(&pNode->heartbeatTimerLogicClock),
                                       pNode->heartbeatTimerMS, pNode);
 
       if (code != 0) {
@@ -1915,7 +1912,10 @@ static void syncNodeEqPeerHeartbeatTimer(void* param, void* tmrId) {
 
   if (pSyncNode->replicaNum > 1) {
     if (timerLogicClock == msgLogicClock) {
-      SyncHeartbeat* pSyncMsg = syncHeartbeatBuild(pSyncNode->vgId);
+      SRpcMsg        rpcMsg = {0};
+      (void)syncBuildHeartbeat(&rpcMsg, pSyncNode->vgId);
+
+      SyncHeartbeat* pSyncMsg = rpcMsg.pCont;
       pSyncMsg->srcId = pSyncNode->myRaftId;
       pSyncMsg->destId = pData->destId;
       pSyncMsg->term = pSyncNode->pRaftStore->currentTerm;
@@ -1923,28 +1923,8 @@ static void syncNodeEqPeerHeartbeatTimer(void* param, void* tmrId) {
       pSyncMsg->minMatchIndex = syncMinMatchIndex(pSyncNode);
       pSyncMsg->privateTerm = 0;
 
-      SRpcMsg rpcMsg;
-      syncHeartbeat2RpcMsg(pSyncMsg, &rpcMsg);
-
-// eq msg
-#if 0
-      if (pSyncNode->syncEqCtrlMsg != NULL) {
-        int32_t code = pSyncNode->syncEqCtrlMsg(pSyncNode->msgcb, &rpcMsg);
-        if (code != 0) {
-          sError("vgId:%d, sync ctrl enqueue timer msg error, code:%d", pSyncNode->vgId, code);
-          rpcFreeCont(rpcMsg.pCont);
-          syncHeartbeatDestroy(pSyncMsg);
-          return;
-        }
-      } else {
-        sError("vgId:%d, enqueue ctrl msg cb ptr (i.e. syncEqMsg) not set.", pSyncNode->vgId);
-      }
-#endif
-
       // send msg
-      syncNodeSendHeartbeat(pSyncNode, &(pSyncMsg->destId), pSyncMsg);
-
-      syncHeartbeatDestroy(pSyncMsg);
+      syncNodeSendHeartbeat(pSyncNode, &pSyncMsg->destId, &rpcMsg);
 
       if (syncIsInit()) {
         taosTmrReset(syncNodeEqPeerHeartbeatTimer, pSyncTimer->timerMS, pData, syncEnv()->pTimerManager,
@@ -1972,7 +1952,7 @@ static int32_t syncNodeEqNoop(SSyncNode* pNode) {
   if (pEntry == NULL) return -1;
 
   SRpcMsg rpcMsg = {0};
-  int32_t code = syncClientRequestBuildFromNoopEntry(&rpcMsg, pEntry, pNode->vgId);
+  int32_t code = syncBuildClientRequestFromNoopEntry(&rpcMsg, pEntry, pNode->vgId);
   syncEntryDestory(pEntry);
 
   sNTrace(pNode, "propose msg, type:noop");
@@ -2026,7 +2006,8 @@ static int32_t syncNodeAppendNoop(SSyncNode* ths) {
   return ret;
 }
 
-int32_t syncNodeOnHeartbeat(SSyncNode* ths, SyncHeartbeat* pMsg) {
+int32_t syncNodeOnHeartbeat(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
+  SyncHeartbeat* pMsg = pRpcMsg->pCont;
   syncLogRecvHeartbeat(ths, pMsg, "");
 
   SyncHeartbeatReply* pMsgReply = syncHeartbeatReplyBuild(ths->vgId);
diff --git a/source/libs/sync/src/syncMessage.c b/source/libs/sync/src/syncMessage.c
index 826549998e..6941e83478 100644
--- a/source/libs/sync/src/syncMessage.c
+++ b/source/libs/sync/src/syncMessage.c
@@ -20,18 +20,18 @@
 #include "syncUtil.h"
 #include "tcoding.h"
 
-int32_t syncTimeoutBuild(SRpcMsg* pTimeoutRpcMsg, ESyncTimeoutType timeoutType, uint64_t logicClock, int32_t timerMS,
+int32_t syncBuildTimeout(SRpcMsg* pMsg, ESyncTimeoutType timeoutType, uint64_t logicClock, int32_t timerMS,
                          SSyncNode* pNode) {
   int32_t bytes = sizeof(SyncTimeout);
-  pTimeoutRpcMsg->pCont = rpcMallocCont(bytes);
-  pTimeoutRpcMsg->msgType = TDMT_SYNC_TIMEOUT;
-  pTimeoutRpcMsg->contLen = bytes;
-  if (pTimeoutRpcMsg->pCont == NULL) {
+  pMsg->pCont = rpcMallocCont(bytes);
+  pMsg->msgType = TDMT_SYNC_TIMEOUT;
+  pMsg->contLen = bytes;
+  if (pMsg->pCont == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
-  SyncTimeout* pTimeout = pTimeoutRpcMsg->pCont;
+  SyncTimeout* pTimeout = pMsg->pCont;
   pTimeout->bytes = bytes;
   pTimeout->msgType = TDMT_SYNC_TIMEOUT;
   pTimeout->vgId = pNode->vgId;
@@ -42,41 +42,40 @@ int32_t syncTimeoutBuild(SRpcMsg* pTimeoutRpcMsg, ESyncTimeoutType timeoutType,
   return 0;
 }
 
-int32_t syncClientRequestBuildFromRpcMsg(SRpcMsg* pClientRequestRpcMsg, const SRpcMsg* pOriginalRpcMsg, uint64_t seqNum,
-                                         bool isWeak, int32_t vgId) {
-  int32_t bytes = sizeof(SyncClientRequest) + pOriginalRpcMsg->contLen;
-  pClientRequestRpcMsg->pCont = rpcMallocCont(bytes);
-  pClientRequestRpcMsg->msgType = TDMT_SYNC_CLIENT_REQUEST;
-  pClientRequestRpcMsg->contLen = bytes;
-  if (pClientRequestRpcMsg->pCont == NULL) {
+int32_t syncBuildClientRequest(SRpcMsg* pMsg, const SRpcMsg* pOriginal, uint64_t seqNum, bool isWeak, int32_t vgId) {
+  int32_t bytes = sizeof(SyncClientRequest) + pOriginal->contLen;
+  pMsg->pCont = rpcMallocCont(bytes);
+  pMsg->msgType = TDMT_SYNC_CLIENT_REQUEST;
+  pMsg->contLen = bytes;
+  if (pMsg->pCont == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
-  SyncClientRequest* pClientRequest = pClientRequestRpcMsg->pCont;
+  SyncClientRequest* pClientRequest = pMsg->pCont;
   pClientRequest->bytes = bytes;
   pClientRequest->vgId = vgId;
   pClientRequest->msgType = TDMT_SYNC_CLIENT_REQUEST;
-  pClientRequest->originalRpcType = pOriginalRpcMsg->msgType;
+  pClientRequest->originalRpcType = pOriginal->msgType;
   pClientRequest->seqNum = seqNum;
   pClientRequest->isWeak = isWeak;
-  pClientRequest->dataLen = pOriginalRpcMsg->contLen;
-  memcpy(pClientRequest->data, (char*)pOriginalRpcMsg->pCont, pOriginalRpcMsg->contLen);
+  pClientRequest->dataLen = pOriginal->contLen;
+  memcpy(pClientRequest->data, (char*)pOriginal->pCont, pOriginal->contLen);
 
   return 0;
 }
 
-int32_t syncClientRequestBuildFromNoopEntry(SRpcMsg* pClientRequestRpcMsg, const SSyncRaftEntry* pEntry, int32_t vgId) {
+int32_t syncBuildClientRequestFromNoopEntry(SRpcMsg* pMsg, const SSyncRaftEntry* pEntry, int32_t vgId) {
   int32_t bytes = sizeof(SyncClientRequest) + pEntry->bytes;
-  pClientRequestRpcMsg->pCont = rpcMallocCont(bytes);
-  pClientRequestRpcMsg->msgType = TDMT_SYNC_CLIENT_REQUEST;
-  pClientRequestRpcMsg->contLen = bytes;
-  if (pClientRequestRpcMsg->pCont == NULL) {
+  pMsg->pCont = rpcMallocCont(bytes);
+  pMsg->msgType = TDMT_SYNC_CLIENT_REQUEST;
+  pMsg->contLen = bytes;
+  if (pMsg->pCont == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
-  SyncClientRequest* pClientRequest = pClientRequestRpcMsg->pCont;
+  SyncClientRequest* pClientRequest = pMsg->pCont;
   pClientRequest->bytes = bytes;
   pClientRequest->vgId = vgId;
   pClientRequest->msgType = TDMT_SYNC_CLIENT_REQUEST;
@@ -93,7 +92,7 @@ int32_t syncBuildRequestVote(SRpcMsg* pMsg, int32_t vgId) {
   pMsg->msgType = TDMT_SYNC_REQUEST_VOTE;
   pMsg->contLen = bytes;
   if (pMsg->pCont == NULL) {
-    terrno = TDMT_SYNC_REQUEST_VOTE;
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
@@ -110,7 +109,7 @@ int32_t syncBuildRequestVoteReply(SRpcMsg* pMsg, int32_t vgId) {
   pMsg->msgType = TDMT_SYNC_REQUEST_VOTE_REPLY;
   pMsg->contLen = bytes;
   if (pMsg->pCont == NULL) {
-    terrno = TDMT_SYNC_REQUEST_VOTE;
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
@@ -139,314 +138,40 @@ int32_t syncBuildAppendEntries(SRpcMsg* pMsg, int32_t dataLen, int32_t vgId) {
   return 0;
 }
 
-// ---- message process SyncAppendEntriesReply----
-SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId) {
-  uint32_t                bytes = sizeof(SyncAppendEntriesReply);
-  SyncAppendEntriesReply* pMsg = taosMemoryMalloc(bytes);
-  memset(pMsg, 0, bytes);
-  pMsg->bytes = bytes;
-  pMsg->vgId = vgId;
+int32_t syncBuildAppendEntriesReply(SRpcMsg* pMsg, int32_t vgId) {
+  int32_t bytes = sizeof(SyncAppendEntriesReply);
+  pMsg->pCont = rpcMallocCont(bytes);
   pMsg->msgType = TDMT_SYNC_APPEND_ENTRIES_REPLY;
-  return pMsg;
-}
-
-void syncAppendEntriesReplyDestroy(SyncAppendEntriesReply* pMsg) {
-  if (pMsg != NULL) {
-    taosMemoryFree(pMsg);
-  }
-}
-
-void syncAppendEntriesReplySerialize(const SyncAppendEntriesReply* pMsg, char* buf, uint32_t bufLen) {
-  ASSERT(pMsg->bytes <= bufLen);
-  memcpy(buf, pMsg, pMsg->bytes);
-}
-
-void syncAppendEntriesReplyDeserialize(const char* buf, uint32_t len, SyncAppendEntriesReply* pMsg) {
-  memcpy(pMsg, buf, len);
-  ASSERT(len == pMsg->bytes);
-}
-
-char* syncAppendEntriesReplySerialize2(const SyncAppendEntriesReply* pMsg, uint32_t* len) {
-  char* buf = taosMemoryMalloc(pMsg->bytes);
-  ASSERT(buf != NULL);
-  syncAppendEntriesReplySerialize(pMsg, buf, pMsg->bytes);
-  if (len != NULL) {
-    *len = pMsg->bytes;
-  }
-  return buf;
-}
-
-SyncAppendEntriesReply* syncAppendEntriesReplyDeserialize2(const char* buf, uint32_t len) {
-  uint32_t                bytes = *((uint32_t*)buf);
-  SyncAppendEntriesReply* pMsg = taosMemoryMalloc(bytes);
-  ASSERT(pMsg != NULL);
-  syncAppendEntriesReplyDeserialize(buf, len, pMsg);
-  ASSERT(len == pMsg->bytes);
-  return pMsg;
-}
-
-void syncAppendEntriesReply2RpcMsg(const SyncAppendEntriesReply* pMsg, SRpcMsg* pRpcMsg) {
-  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
-  pRpcMsg->msgType = pMsg->msgType;
-  pRpcMsg->contLen = pMsg->bytes;
-  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
-  syncAppendEntriesReplySerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
-}
-
-void syncAppendEntriesReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntriesReply* pMsg) {
-  syncAppendEntriesReplyDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
-}
-
-SyncAppendEntriesReply* syncAppendEntriesReplyFromRpcMsg2(const SRpcMsg* pRpcMsg) {
-  SyncAppendEntriesReply* pMsg = syncAppendEntriesReplyDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
-  ASSERT(pMsg != NULL);
-  return pMsg;
-}
-
-cJSON* syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg) {
-  char   u64buf[128] = {0};
-  cJSON* pRoot = cJSON_CreateObject();
-
-  if (pMsg != NULL) {
-    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
-    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
-    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
-
-    cJSON* pSrcId = cJSON_CreateObject();
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
-    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
-    {
-      uint64_t u64 = pMsg->srcId.addr;
-      cJSON*   pTmp = pSrcId;
-      char     host[128] = {0};
-      uint16_t port;
-      syncUtilU642Addr(u64, host, sizeof(host), &port);
-      cJSON_AddStringToObject(pTmp, "addr_host", host);
-      cJSON_AddNumberToObject(pTmp, "addr_port", port);
-    }
-    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
-    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
-
-    cJSON* pDestId = cJSON_CreateObject();
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
-    cJSON_AddStringToObject(pDestId, "addr", u64buf);
-    {
-      uint64_t u64 = pMsg->destId.addr;
-      cJSON*   pTmp = pDestId;
-      char     host[128] = {0};
-      uint16_t port;
-      syncUtilU642Addr(u64, host, sizeof(host), &port);
-      cJSON_AddStringToObject(pTmp, "addr_host", host);
-      cJSON_AddNumberToObject(pTmp, "addr_port", port);
-    }
-    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
-    cJSON_AddItemToObject(pRoot, "destId", pDestId);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
-    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
-    cJSON_AddStringToObject(pRoot, "term", u64buf);
-    cJSON_AddNumberToObject(pRoot, "success", pMsg->success);
-    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->matchIndex);
-    cJSON_AddStringToObject(pRoot, "matchIndex", u64buf);
-    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->startTime);
-    cJSON_AddStringToObject(pRoot, "startTime", u64buf);
+  pMsg->contLen = bytes;
+  if (pMsg->pCont == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
   }
 
-  cJSON* pJson = cJSON_CreateObject();
-  cJSON_AddItemToObject(pJson, "SyncAppendEntriesReply", pRoot);
-  return pJson;
+  SyncAppendEntriesReply* pAppendEntriesReply = pMsg->pCont;
+  pAppendEntriesReply->bytes = bytes;
+  pAppendEntriesReply->msgType = TDMT_SYNC_APPEND_ENTRIES_REPLY;
+  pAppendEntriesReply->vgId = vgId;
+  return 0;
 }
 
-char* syncAppendEntriesReply2Str(const SyncAppendEntriesReply* pMsg) {
-  cJSON* pJson = syncAppendEntriesReply2Json(pMsg);
-  char*  serialized = cJSON_Print(pJson);
-  cJSON_Delete(pJson);
-  return serialized;
-}
-
-// for debug ----------------------
-void syncAppendEntriesReplyPrint(const SyncAppendEntriesReply* pMsg) {
-  char* serialized = syncAppendEntriesReply2Str(pMsg);
-  printf("syncAppendEntriesReplyPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesReplyPrint2(char* s, const SyncAppendEntriesReply* pMsg) {
-  char* serialized = syncAppendEntriesReply2Str(pMsg);
-  printf("syncAppendEntriesReplyPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesReplyLog(const SyncAppendEntriesReply* pMsg) {
-  char* serialized = syncAppendEntriesReply2Str(pMsg);
-  sTrace("syncAppendEntriesReplyLog | len:%d| %s", (int32_t)strlen(serialized), serialized);
-  taosMemoryFree(serialized);
-}
-
-void syncAppendEntriesReplyLog2(char* s, const SyncAppendEntriesReply* pMsg) {
-  if (gRaftDetailLog) {
-    char* serialized = syncAppendEntriesReply2Str(pMsg);
-    sTrace("syncAppendEntriesReplyLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
-    taosMemoryFree(serialized);
-  }
-}
-
-// ---- message process SyncHeartbeat----
-SyncHeartbeat* syncHeartbeatBuild(int32_t vgId) {
-  uint32_t       bytes = sizeof(SyncHeartbeat);
-  SyncHeartbeat* pMsg = taosMemoryMalloc(bytes);
-  memset(pMsg, 0, bytes);
-  pMsg->bytes = bytes;
-  pMsg->vgId = vgId;
+int32_t syncBuildHeartbeat(SRpcMsg* pMsg, int32_t vgId) {
+  int32_t bytes = sizeof(SyncHeartbeat);
+  pMsg->pCont = rpcMallocCont(bytes);
   pMsg->msgType = TDMT_SYNC_HEARTBEAT;
-  return pMsg;
-}
-
-void syncHeartbeatDestroy(SyncHeartbeat* pMsg) {
-  if (pMsg != NULL) {
-    taosMemoryFree(pMsg);
-  }
-}
-
-void syncHeartbeatSerialize(const SyncHeartbeat* pMsg, char* buf, uint32_t bufLen) {
-  ASSERT(pMsg->bytes <= bufLen);
-  memcpy(buf, pMsg, pMsg->bytes);
-}
-
-void syncHeartbeatDeserialize(const char* buf, uint32_t len, SyncHeartbeat* pMsg) {
-  memcpy(pMsg, buf, len);
-  ASSERT(len == pMsg->bytes);
-}
-
-char* syncHeartbeatSerialize2(const SyncHeartbeat* pMsg, uint32_t* len) {
-  char* buf = taosMemoryMalloc(pMsg->bytes);
-  ASSERT(buf != NULL);
-  syncHeartbeatSerialize(pMsg, buf, pMsg->bytes);
-  if (len != NULL) {
-    *len = pMsg->bytes;
-  }
-  return buf;
-}
-
-SyncHeartbeat* syncHeartbeatDeserialize2(const char* buf, uint32_t len) {
-  uint32_t       bytes = *((uint32_t*)buf);
-  SyncHeartbeat* pMsg = taosMemoryMalloc(bytes);
-  ASSERT(pMsg != NULL);
-  syncHeartbeatDeserialize(buf, len, pMsg);
-  ASSERT(len == pMsg->bytes);
-  return pMsg;
-}
-
-void syncHeartbeat2RpcMsg(const SyncHeartbeat* pMsg, SRpcMsg* pRpcMsg) {
-  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
-  pRpcMsg->msgType = pMsg->msgType;
-  pRpcMsg->contLen = pMsg->bytes;
-  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
-  syncHeartbeatSerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
-}
-
-void syncHeartbeatFromRpcMsg(const SRpcMsg* pRpcMsg, SyncHeartbeat* pMsg) {
-  syncHeartbeatDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
-}
-
-SyncHeartbeat* syncHeartbeatFromRpcMsg2(const SRpcMsg* pRpcMsg) {
-  SyncHeartbeat* pMsg = syncHeartbeatDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
-  ASSERT(pMsg != NULL);
-  return pMsg;
-}
-
-cJSON* syncHeartbeat2Json(const SyncHeartbeat* pMsg) {
-  char   u64buf[128] = {0};
-  cJSON* pRoot = cJSON_CreateObject();
-
-  if (pMsg != NULL) {
-    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
-    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
-    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
-
-    cJSON* pSrcId = cJSON_CreateObject();
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
-    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
-    {
-      uint64_t u64 = pMsg->srcId.addr;
-      cJSON*   pTmp = pSrcId;
-      char     host[128] = {0};
-      uint16_t port;
-      syncUtilU642Addr(u64, host, sizeof(host), &port);
-      cJSON_AddStringToObject(pTmp, "addr_host", host);
-      cJSON_AddNumberToObject(pTmp, "addr_port", port);
-    }
-    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
-    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
-
-    cJSON* pDestId = cJSON_CreateObject();
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
-    cJSON_AddStringToObject(pDestId, "addr", u64buf);
-    {
-      uint64_t u64 = pMsg->destId.addr;
-      cJSON*   pTmp = pDestId;
-      char     host[128] = {0};
-      uint16_t port;
-      syncUtilU642Addr(u64, host, sizeof(host), &port);
-      cJSON_AddStringToObject(pTmp, "addr_host", host);
-      cJSON_AddNumberToObject(pTmp, "addr_port", port);
-    }
-    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
-    cJSON_AddItemToObject(pRoot, "destId", pDestId);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
-    cJSON_AddStringToObject(pRoot, "term", u64buf);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
-    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
-
-    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->commitIndex);
-    cJSON_AddStringToObject(pRoot, "commitIndex", u64buf);
+  pMsg->contLen = bytes;
+  if (pMsg->pCont == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
   }
 
-  cJSON* pJson = cJSON_CreateObject();
-  cJSON_AddItemToObject(pJson, "SyncHeartbeat", pRoot);
-  return pJson;
+  SyncHeartbeat* pHeartbeat = pMsg->pCont;
+  pHeartbeat->bytes = bytes;
+  pHeartbeat->msgType = TDMT_SYNC_HEARTBEAT;
+  pHeartbeat->vgId = vgId;
+  return 0;
 }
 
-char* syncHeartbeat2Str(const SyncHeartbeat* pMsg) {
-  cJSON* pJson = syncHeartbeat2Json(pMsg);
-  char*  serialized = cJSON_Print(pJson);
-  cJSON_Delete(pJson);
-  return serialized;
-}
-
-void syncHeartbeatPrint(const SyncHeartbeat* pMsg) {
-  char* serialized = syncHeartbeat2Str(pMsg);
-  printf("syncHeartbeatPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncHeartbeatPrint2(char* s, const SyncHeartbeat* pMsg) {
-  char* serialized = syncHeartbeat2Str(pMsg);
-  printf("syncHeartbeatPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
-  fflush(NULL);
-  taosMemoryFree(serialized);
-}
-
-void syncHeartbeatLog(const SyncHeartbeat* pMsg) {
-  char* serialized = syncHeartbeat2Str(pMsg);
-  sTrace("syncHeartbeatLog | len:%d | %s", (int32_t)strlen(serialized), serialized);
-  taosMemoryFree(serialized);
-}
-
-void syncHeartbeatLog2(char* s, const SyncHeartbeat* pMsg) {
-  if (gRaftDetailLog) {
-    char* serialized = syncHeartbeat2Str(pMsg);
-    sTrace("syncHeartbeatLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
-    taosMemoryFree(serialized);
-  }
-}
 
 // ---- message process SyncHeartbeatReply----
 SyncHeartbeatReply* syncHeartbeatReplyBuild(int32_t vgId) {
diff --git a/source/libs/sync/src/syncReplication.c b/source/libs/sync/src/syncReplication.c
index c67b17f345..f6ed76bbc8 100644
--- a/source/libs/sync/src/syncReplication.c
+++ b/source/libs/sync/src/syncReplication.c
@@ -186,19 +186,19 @@ int32_t syncNodeMaybeSendAppendEntries(SSyncNode* pSyncNode, const SRaftId* dest
   return ret;
 }
 
-int32_t syncNodeSendHeartbeat(SSyncNode* pSyncNode, const SRaftId* destRaftId, const SyncHeartbeat* pMsg) {
-  int32_t ret = 0;
-  syncLogSendHeartbeat(pSyncNode, pMsg, "");
-
-  SRpcMsg rpcMsg;
-  syncHeartbeat2RpcMsg(pMsg, &rpcMsg);
-  syncNodeSendMsgById(&(pMsg->destId), pSyncNode, &rpcMsg);
-  return ret;
+int32_t syncNodeSendHeartbeat(SSyncNode* pSyncNode, const SRaftId* destId, SRpcMsg* pMsg) {
+  syncLogSendHeartbeat(pSyncNode, pMsg->pCont, "");
+  return syncNodeSendMsgById(destId, pSyncNode, pMsg);
 }
 
 int32_t syncNodeHeartbeatPeers(SSyncNode* pSyncNode) {
   for (int32_t i = 0; i < pSyncNode->peersNum; ++i) {
-    SyncHeartbeat* pSyncMsg = syncHeartbeatBuild(pSyncNode->vgId);
+    SRpcMsg rpcMsg = {0};
+    if (syncBuildHeartbeat(&rpcMsg, pSyncNode->vgId) != 0) {
+      continue;
+    }
+
+    SyncHeartbeat* pSyncMsg = rpcMsg.pCont;
     pSyncMsg->srcId = pSyncNode->myRaftId;
     pSyncMsg->destId = pSyncNode->peersId[i];
     pSyncMsg->term = pSyncNode->pRaftStore->currentTerm;
@@ -206,13 +206,8 @@ int32_t syncNodeHeartbeatPeers(SSyncNode* pSyncNode) {
     pSyncMsg->minMatchIndex = syncMinMatchIndex(pSyncNode);
     pSyncMsg->privateTerm = 0;
 
-    SRpcMsg rpcMsg;
-    syncHeartbeat2RpcMsg(pSyncMsg, &rpcMsg);
-
     // send msg
-    syncNodeSendHeartbeat(pSyncNode, &(pSyncMsg->destId), pSyncMsg);
-
-    syncHeartbeatDestroy(pSyncMsg);
+    syncNodeSendHeartbeat(pSyncNode, &pSyncMsg->destId, &rpcMsg);
   }
 
   return 0;
diff --git a/source/libs/sync/test/syncRpcMsgTest.cpp b/source/libs/sync/test/syncRpcMsgTest.cpp
index 3f66cd9d1c..5fb622d791 100644
--- a/source/libs/sync/test/syncRpcMsgTest.cpp
+++ b/source/libs/sync/test/syncRpcMsgTest.cpp
@@ -45,7 +45,7 @@ SyncClientRequest *createSyncClientRequest() {
   strcpy((char *)rpcMsg.pCont, "hello rpc");
 
   SRpcMsg clientRequestMsg;
-  syncClientRequestBuildFromRpcMsg(&clientRequestMsg, &rpcMsg, 123, true, 1000);
+  syncBuildClientRequest(&clientRequestMsg, &rpcMsg, 123, true, 1000);
   SyncClientRequest *pMsg = (SyncClientRequest *)taosMemoryMalloc(clientRequestMsg.contLen);
   memcpy(pMsg->data, clientRequestMsg.pCont, clientRequestMsg.contLen);
   return pMsg;
diff --git a/source/libs/sync/test/syncSnapshotTest.cpp b/source/libs/sync/test/syncSnapshotTest.cpp
index 15854eeca6..000348bf1b 100644
--- a/source/libs/sync/test/syncSnapshotTest.cpp
+++ b/source/libs/sync/test/syncSnapshotTest.cpp
@@ -154,7 +154,7 @@ SRpcMsg *step0() {
 
 SyncClientRequest *step1(const SRpcMsg *pMsg) {
   SRpcMsg clientRequestMsg;
-  syncClientRequestBuildFromRpcMsg(&clientRequestMsg, pMsg, 123, true, 1000);
+  syncBuildClientRequest(&clientRequestMsg, pMsg, 123, true, 1000);
   SyncClientRequest *pMsg2 = (SyncClientRequest *)taosMemoryMalloc(clientRequestMsg.contLen);
   memcpy(pMsg2->data, clientRequestMsg.pCont, clientRequestMsg.contLen);
   return pMsg2;
diff --git a/source/libs/sync/test/sync_test_lib/inc/syncTest.h b/source/libs/sync/test/sync_test_lib/inc/syncTest.h
index ef3e4c3af9..4ebd78dd42 100644
--- a/source/libs/sync/test/sync_test_lib/inc/syncTest.h
+++ b/source/libs/sync/test/sync_test_lib/inc/syncTest.h
@@ -295,6 +295,42 @@ void syncAppendEntriesPrint2(char* s, const SyncAppendEntries* pMsg);
 void syncAppendEntriesLog(const SyncAppendEntries* pMsg);
 void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg);
 
+SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId);
+void                    syncAppendEntriesReplyDestroy(SyncAppendEntriesReply* pMsg);
+void                    syncAppendEntriesReplySerialize(const SyncAppendEntriesReply* pMsg, char* buf, uint32_t bufLen);
+void                    syncAppendEntriesReplyDeserialize(const char* buf, uint32_t len, SyncAppendEntriesReply* pMsg);
+char*                   syncAppendEntriesReplySerialize2(const SyncAppendEntriesReply* pMsg, uint32_t* len);
+SyncAppendEntriesReply* syncAppendEntriesReplyDeserialize2(const char* buf, uint32_t len);
+void                    syncAppendEntriesReply2RpcMsg(const SyncAppendEntriesReply* pMsg, SRpcMsg* pRpcMsg);
+void                    syncAppendEntriesReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntriesReply* pMsg);
+SyncAppendEntriesReply* syncAppendEntriesReplyFromRpcMsg2(const SRpcMsg* pRpcMsg);
+cJSON*                  syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg);
+char*                   syncAppendEntriesReply2Str(const SyncAppendEntriesReply* pMsg);
+
+// for debug ----------------------
+void syncAppendEntriesReplyPrint(const SyncAppendEntriesReply* pMsg);
+void syncAppendEntriesReplyPrint2(char* s, const SyncAppendEntriesReply* pMsg);
+void syncAppendEntriesReplyLog(const SyncAppendEntriesReply* pMsg);
+void syncAppendEntriesReplyLog2(char* s, const SyncAppendEntriesReply* pMsg);
+
+SyncHeartbeat* syncHeartbeatBuild(int32_t vgId);
+void           syncHeartbeatDestroy(SyncHeartbeat* pMsg);
+void           syncHeartbeatSerialize(const SyncHeartbeat* pMsg, char* buf, uint32_t bufLen);
+void           syncHeartbeatDeserialize(const char* buf, uint32_t len, SyncHeartbeat* pMsg);
+char*          syncHeartbeatSerialize2(const SyncHeartbeat* pMsg, uint32_t* len);
+SyncHeartbeat* syncHeartbeatDeserialize2(const char* buf, uint32_t len);
+void           syncHeartbeat2RpcMsg(const SyncHeartbeat* pMsg, SRpcMsg* pRpcMsg);
+void           syncHeartbeatFromRpcMsg(const SRpcMsg* pRpcMsg, SyncHeartbeat* pMsg);
+SyncHeartbeat* syncHeartbeatFromRpcMsg2(const SRpcMsg* pRpcMsg);
+cJSON*         syncHeartbeat2Json(const SyncHeartbeat* pMsg);
+char*          syncHeartbeat2Str(const SyncHeartbeat* pMsg);
+
+// for debug ----------------------
+void syncHeartbeatPrint(const SyncHeartbeat* pMsg);
+void syncHeartbeatPrint2(char* s, const SyncHeartbeat* pMsg);
+void syncHeartbeatLog(const SyncHeartbeat* pMsg);
+void syncHeartbeatLog2(char* s, const SyncHeartbeat* pMsg);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c b/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
index a5a30f0273..a3bfdcb7ef 100644
--- a/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
+++ b/source/libs/sync/test/sync_test_lib/src/syncMessageDebug.c
@@ -1479,3 +1479,312 @@ void syncAppendEntriesLog2(char* s, const SyncAppendEntries* pMsg) {
     taosMemoryFree(serialized);
   }
 }
+
+// ---- message process SyncAppendEntriesReply----
+SyncAppendEntriesReply* syncAppendEntriesReplyBuild(int32_t vgId) {
+  uint32_t                bytes = sizeof(SyncAppendEntriesReply);
+  SyncAppendEntriesReply* pMsg = taosMemoryMalloc(bytes);
+  memset(pMsg, 0, bytes);
+  pMsg->bytes = bytes;
+  pMsg->vgId = vgId;
+  pMsg->msgType = TDMT_SYNC_APPEND_ENTRIES_REPLY;
+  return pMsg;
+}
+
+void syncAppendEntriesReplyDestroy(SyncAppendEntriesReply* pMsg) {
+  if (pMsg != NULL) {
+    taosMemoryFree(pMsg);
+  }
+}
+
+void syncAppendEntriesReplySerialize(const SyncAppendEntriesReply* pMsg, char* buf, uint32_t bufLen) {
+  ASSERT(pMsg->bytes <= bufLen);
+  memcpy(buf, pMsg, pMsg->bytes);
+}
+
+void syncAppendEntriesReplyDeserialize(const char* buf, uint32_t len, SyncAppendEntriesReply* pMsg) {
+  memcpy(pMsg, buf, len);
+  ASSERT(len == pMsg->bytes);
+}
+
+char* syncAppendEntriesReplySerialize2(const SyncAppendEntriesReply* pMsg, uint32_t* len) {
+  char* buf = taosMemoryMalloc(pMsg->bytes);
+  ASSERT(buf != NULL);
+  syncAppendEntriesReplySerialize(pMsg, buf, pMsg->bytes);
+  if (len != NULL) {
+    *len = pMsg->bytes;
+  }
+  return buf;
+}
+
+SyncAppendEntriesReply* syncAppendEntriesReplyDeserialize2(const char* buf, uint32_t len) {
+  uint32_t                bytes = *((uint32_t*)buf);
+  SyncAppendEntriesReply* pMsg = taosMemoryMalloc(bytes);
+  ASSERT(pMsg != NULL);
+  syncAppendEntriesReplyDeserialize(buf, len, pMsg);
+  ASSERT(len == pMsg->bytes);
+  return pMsg;
+}
+
+void syncAppendEntriesReply2RpcMsg(const SyncAppendEntriesReply* pMsg, SRpcMsg* pRpcMsg) {
+  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
+  pRpcMsg->msgType = pMsg->msgType;
+  pRpcMsg->contLen = pMsg->bytes;
+  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
+  syncAppendEntriesReplySerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
+}
+
+void syncAppendEntriesReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncAppendEntriesReply* pMsg) {
+  syncAppendEntriesReplyDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
+}
+
+SyncAppendEntriesReply* syncAppendEntriesReplyFromRpcMsg2(const SRpcMsg* pRpcMsg) {
+  SyncAppendEntriesReply* pMsg = syncAppendEntriesReplyDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
+  ASSERT(pMsg != NULL);
+  return pMsg;
+}
+
+cJSON* syncAppendEntriesReply2Json(const SyncAppendEntriesReply* pMsg) {
+  char   u64buf[128] = {0};
+  cJSON* pRoot = cJSON_CreateObject();
+
+  if (pMsg != NULL) {
+    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
+    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
+    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
+
+    cJSON* pSrcId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
+    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->srcId.addr;
+      cJSON*   pTmp = pSrcId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
+    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
+
+    cJSON* pDestId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
+    cJSON_AddStringToObject(pDestId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->destId.addr;
+      cJSON*   pTmp = pDestId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
+    cJSON_AddItemToObject(pRoot, "destId", pDestId);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
+    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
+    cJSON_AddStringToObject(pRoot, "term", u64buf);
+    cJSON_AddNumberToObject(pRoot, "success", pMsg->success);
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->matchIndex);
+    cJSON_AddStringToObject(pRoot, "matchIndex", u64buf);
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->startTime);
+    cJSON_AddStringToObject(pRoot, "startTime", u64buf);
+  }
+
+  cJSON* pJson = cJSON_CreateObject();
+  cJSON_AddItemToObject(pJson, "SyncAppendEntriesReply", pRoot);
+  return pJson;
+}
+
+char* syncAppendEntriesReply2Str(const SyncAppendEntriesReply* pMsg) {
+  cJSON* pJson = syncAppendEntriesReply2Json(pMsg);
+  char*  serialized = cJSON_Print(pJson);
+  cJSON_Delete(pJson);
+  return serialized;
+}
+
+// for debug ----------------------
+void syncAppendEntriesReplyPrint(const SyncAppendEntriesReply* pMsg) {
+  char* serialized = syncAppendEntriesReply2Str(pMsg);
+  printf("syncAppendEntriesReplyPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesReplyPrint2(char* s, const SyncAppendEntriesReply* pMsg) {
+  char* serialized = syncAppendEntriesReply2Str(pMsg);
+  printf("syncAppendEntriesReplyPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesReplyLog(const SyncAppendEntriesReply* pMsg) {
+  char* serialized = syncAppendEntriesReply2Str(pMsg);
+  sTrace("syncAppendEntriesReplyLog | len:%d| %s", (int32_t)strlen(serialized), serialized);
+  taosMemoryFree(serialized);
+}
+
+void syncAppendEntriesReplyLog2(char* s, const SyncAppendEntriesReply* pMsg) {
+  if (gRaftDetailLog) {
+    char* serialized = syncAppendEntriesReply2Str(pMsg);
+    sTrace("syncAppendEntriesReplyLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
+    taosMemoryFree(serialized);
+  }
+}
+
+// ---- message process SyncHeartbeat----
+SyncHeartbeat* syncHeartbeatBuild(int32_t vgId) {
+  uint32_t       bytes = sizeof(SyncHeartbeat);
+  SyncHeartbeat* pMsg = taosMemoryMalloc(bytes);
+  memset(pMsg, 0, bytes);
+  pMsg->bytes = bytes;
+  pMsg->vgId = vgId;
+  pMsg->msgType = TDMT_SYNC_HEARTBEAT;
+  return pMsg;
+}
+
+void syncHeartbeatDestroy(SyncHeartbeat* pMsg) {
+  if (pMsg != NULL) {
+    taosMemoryFree(pMsg);
+  }
+}
+
+void syncHeartbeatSerialize(const SyncHeartbeat* pMsg, char* buf, uint32_t bufLen) {
+  ASSERT(pMsg->bytes <= bufLen);
+  memcpy(buf, pMsg, pMsg->bytes);
+}
+
+void syncHeartbeatDeserialize(const char* buf, uint32_t len, SyncHeartbeat* pMsg) {
+  memcpy(pMsg, buf, len);
+  ASSERT(len == pMsg->bytes);
+}
+
+char* syncHeartbeatSerialize2(const SyncHeartbeat* pMsg, uint32_t* len) {
+  char* buf = taosMemoryMalloc(pMsg->bytes);
+  ASSERT(buf != NULL);
+  syncHeartbeatSerialize(pMsg, buf, pMsg->bytes);
+  if (len != NULL) {
+    *len = pMsg->bytes;
+  }
+  return buf;
+}
+
+SyncHeartbeat* syncHeartbeatDeserialize2(const char* buf, uint32_t len) {
+  uint32_t       bytes = *((uint32_t*)buf);
+  SyncHeartbeat* pMsg = taosMemoryMalloc(bytes);
+  ASSERT(pMsg != NULL);
+  syncHeartbeatDeserialize(buf, len, pMsg);
+  ASSERT(len == pMsg->bytes);
+  return pMsg;
+}
+
+void syncHeartbeat2RpcMsg(const SyncHeartbeat* pMsg, SRpcMsg* pRpcMsg) {
+  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
+  pRpcMsg->msgType = pMsg->msgType;
+  pRpcMsg->contLen = pMsg->bytes;
+  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
+  syncHeartbeatSerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
+}
+
+void syncHeartbeatFromRpcMsg(const SRpcMsg* pRpcMsg, SyncHeartbeat* pMsg) {
+  syncHeartbeatDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
+}
+
+SyncHeartbeat* syncHeartbeatFromRpcMsg2(const SRpcMsg* pRpcMsg) {
+  SyncHeartbeat* pMsg = syncHeartbeatDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
+  ASSERT(pMsg != NULL);
+  return pMsg;
+}
+
+cJSON* syncHeartbeat2Json(const SyncHeartbeat* pMsg) {
+  char   u64buf[128] = {0};
+  cJSON* pRoot = cJSON_CreateObject();
+
+  if (pMsg != NULL) {
+    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
+    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
+    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
+
+    cJSON* pSrcId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
+    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->srcId.addr;
+      cJSON*   pTmp = pSrcId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
+    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
+
+    cJSON* pDestId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
+    cJSON_AddStringToObject(pDestId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->destId.addr;
+      cJSON*   pTmp = pDestId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
+    cJSON_AddItemToObject(pRoot, "destId", pDestId);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
+    cJSON_AddStringToObject(pRoot, "term", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
+    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->commitIndex);
+    cJSON_AddStringToObject(pRoot, "commitIndex", u64buf);
+  }
+
+  cJSON* pJson = cJSON_CreateObject();
+  cJSON_AddItemToObject(pJson, "SyncHeartbeat", pRoot);
+  return pJson;
+}
+
+char* syncHeartbeat2Str(const SyncHeartbeat* pMsg) {
+  cJSON* pJson = syncHeartbeat2Json(pMsg);
+  char*  serialized = cJSON_Print(pJson);
+  cJSON_Delete(pJson);
+  return serialized;
+}
+
+void syncHeartbeatPrint(const SyncHeartbeat* pMsg) {
+  char* serialized = syncHeartbeat2Str(pMsg);
+  printf("syncHeartbeatPrint | len:%d | %s \n", (int32_t)strlen(serialized), serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncHeartbeatPrint2(char* s, const SyncHeartbeat* pMsg) {
+  char* serialized = syncHeartbeat2Str(pMsg);
+  printf("syncHeartbeatPrint2 | len:%d | %s | %s \n", (int32_t)strlen(serialized), s, serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncHeartbeatLog(const SyncHeartbeat* pMsg) {
+  char* serialized = syncHeartbeat2Str(pMsg);
+  sTrace("syncHeartbeatLog | len:%d | %s", (int32_t)strlen(serialized), serialized);
+  taosMemoryFree(serialized);
+}
+
+void syncHeartbeatLog2(char* s, const SyncHeartbeat* pMsg) {
+  if (gRaftDetailLog) {
+    char* serialized = syncHeartbeat2Str(pMsg);
+    sTrace("syncHeartbeatLog2 | len:%d | %s | %s", (int32_t)strlen(serialized), s, serialized);
+    taosMemoryFree(serialized);
+  }
+}
\ No newline at end of file
diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index 8955a65dfa..47546a2791 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -13,7 +13,7 @@
 ,,,script,./test.sh -f tsim/db/alter_option.sim
 ,,,script,./test.sh -f tsim/db/alter_replica_13.sim
 ,,,script,./test.sh -f tsim/db/alter_replica_31.sim
-,,,script,./test.sh -f tsim/db/basic1.sim
+,,y,script,./test.sh -f tsim/db/basic1.sim
 ,,,script,./test.sh -f tsim/db/basic2.sim
 ,,,script,./test.sh -f tsim/db/basic3.sim
 ,,,script,./test.sh -f tsim/db/basic4.sim