diff --git a/source/libs/sync/inc/syncRaftEntry.h b/source/libs/sync/inc/syncRaftEntry.h
index 607ff4ba24cae3ef1985e84a58bb0de44d8fbec4..bab1dcc661a90c0d9747d37699d64b747526495d 100644
--- a/source/libs/sync/inc/syncRaftEntry.h
+++ b/source/libs/sync/inc/syncRaftEntry.h
@@ -26,6 +26,7 @@ extern "C" {
 #include "syncInt.h"
 #include "syncMessage.h"
 #include "taosdef.h"
+#include "tref.h"
 #include "tskiplist.h"
 
 typedef struct SSyncRaftEntry {
@@ -89,6 +90,7 @@ typedef struct SRaftEntryCache {
   SSkipList*    pSkipList;
   int32_t       maxCount;
   int32_t       currentCount;
+  int32_t       refMgr;
   TdThreadMutex mutex;
   SSyncNode*    pSyncNode;
 } SRaftEntryCache;
diff --git a/source/libs/sync/src/syncIO.c b/source/libs/sync/src/syncIO.c
index d9f11ba80f925ad2b73e443169968a54d10209f3..b00be6edb6a6b9473ea1483a4bb508033151f313 100644
--- a/source/libs/sync/src/syncIO.c
+++ b/source/libs/sync/src/syncIO.c
@@ -242,9 +242,9 @@ static int32_t syncIOStopInternal(SSyncIO *io) {
 }
 
 static void *syncIOConsumerFunc(void *param) {
-  SSyncIO   *io = param;
+  SSyncIO *  io = param;
   STaosQall *qall = taosAllocateQall();
-  SRpcMsg   *pRpcMsg, rpcMsg;
+  SRpcMsg *  pRpcMsg, rpcMsg;
   SQueueInfo qinfo = {0};
 
   while (1) {
diff --git a/source/libs/sync/src/syncIndexMgr.c b/source/libs/sync/src/syncIndexMgr.c
index 39bede23f6c65abb71169ea82cf0647803275642..8634676f8686d5ac0249855ca00db5f45b59cd4e 100644
--- a/source/libs/sync/src/syncIndexMgr.c
+++ b/source/libs/sync/src/syncIndexMgr.c
@@ -125,7 +125,7 @@ cJSON *syncIndexMgr2Json(SSyncIndexMgr *pSyncIndexMgr) {
 
 char *syncIndexMgr2Str(SSyncIndexMgr *pSyncIndexMgr) {
   cJSON *pJson = syncIndexMgr2Json(pSyncIndexMgr);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
diff --git a/source/libs/sync/src/syncRaftCfg.c b/source/libs/sync/src/syncRaftCfg.c
index c634a1bf4995cb161ac96b772d3fc0acc0da8b37..56666b35b621d48d99c5a55063bd67c053d59776 100644
--- a/source/libs/sync/src/syncRaftCfg.c
+++ b/source/libs/sync/src/syncRaftCfg.c
@@ -101,7 +101,7 @@ cJSON *syncCfg2Json(SSyncCfg *pSyncCfg) {
 
 char *syncCfg2Str(SSyncCfg *pSyncCfg) {
   cJSON *pJson = syncCfg2Json(pSyncCfg);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -109,7 +109,7 @@ char *syncCfg2Str(SSyncCfg *pSyncCfg) {
 char *syncCfg2SimpleStr(SSyncCfg *pSyncCfg) {
   if (pSyncCfg != NULL) {
     int32_t len = 512;
-    char   *s = taosMemoryMalloc(len);
+    char *  s = taosMemoryMalloc(len);
     memset(s, 0, len);
 
     snprintf(s, len, "{r-num:%d, my:%d, ", pSyncCfg->replicaNum, pSyncCfg->myIndex);
@@ -206,7 +206,7 @@ cJSON *raftCfg2Json(SRaftCfg *pRaftCfg) {
 
 char *raftCfg2Str(SRaftCfg *pRaftCfg) {
   cJSON *pJson = raftCfg2Json(pRaftCfg);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
@@ -285,7 +285,7 @@ int32_t raftCfgFromJson(const cJSON *pRoot, SRaftCfg *pRaftCfg) {
     (pRaftCfg->configIndexArr)[i] = atoll(pIndex->valuestring);
   }
 
-  cJSON  *pJsonSyncCfg = cJSON_GetObjectItem(pJson, "SSyncCfg");
+  cJSON * pJsonSyncCfg = cJSON_GetObjectItem(pJson, "SSyncCfg");
   int32_t code = syncCfgFromJson(pJsonSyncCfg, &(pRaftCfg->cfg));
   ASSERT(code == 0);
 
diff --git a/source/libs/sync/src/syncRaftEntry.c b/source/libs/sync/src/syncRaftEntry.c
index 64cff4d93d710a600ca2a2bf34d329f296477fa9..4687fc41c4c9b783fc9d69c17a8a273d305746bb 100644
--- a/source/libs/sync/src/syncRaftEntry.c
+++ b/source/libs/sync/src/syncRaftEntry.c
@@ -23,6 +23,7 @@ SSyncRaftEntry* syncEntryBuild(uint32_t dataLen) {
   memset(pEntry, 0, bytes);
   pEntry->bytes = bytes;
   pEntry->dataLen = dataLen;
+  pEntry->rid = -1;
   return pEntry;
 }
 
@@ -451,6 +452,11 @@ static char* keyFn(const void* pData) {
 
 static int cmpFn(const void* p1, const void* p2) { return memcmp(p1, p2, sizeof(SyncIndex)); }
 
+static void freeRaftEntry(void* param) {
+  SSyncRaftEntry* pEntry = (SSyncRaftEntry*)param;
+  syncEntryDestory(pEntry);
+}
+
 SRaftEntryCache* raftEntryCacheCreate(SSyncNode* pSyncNode, int32_t maxCount) {
   SRaftEntryCache* pCache = taosMemoryMalloc(sizeof(SRaftEntryCache));
   if (pCache == NULL) {
@@ -466,6 +472,7 @@ SRaftEntryCache* raftEntryCacheCreate(SSyncNode* pSyncNode, int32_t maxCount) {
   }
 
   taosThreadMutexInit(&(pCache->mutex), NULL);
+  pCache->refMgr = taosOpenRef(10, freeRaftEntry);
   pCache->maxCount = maxCount;
   pCache->currentCount = 0;
   pCache->pSyncNode = pSyncNode;
@@ -477,6 +484,10 @@ void raftEntryCacheDestroy(SRaftEntryCache* pCache) {
   if (pCache != NULL) {
     taosThreadMutexLock(&(pCache->mutex));
     tSkipListDestroy(pCache->pSkipList);
+    if (pCache->refMgr != -1) {
+      taosCloseRef(pCache->refMgr);
+      pCache->refMgr = -1;
+    }
     taosThreadMutexUnlock(&(pCache->mutex));
     taosThreadMutexDestroy(&(pCache->mutex));
     taosMemoryFree(pCache);
@@ -498,6 +509,9 @@ int32_t raftEntryCachePutEntry(struct SRaftEntryCache* pCache, SSyncRaftEntry* p
   ASSERT(pSkipListNode != NULL);
   ++(pCache->currentCount);
 
+  pEntry->rid = taosAddRef(pCache->refMgr, pEntry);
+  ASSERT(pEntry->rid >= 0);
+
   do {
     char eventLog[128];
     snprintf(eventLog, sizeof(eventLog), "raft cache add, type:%s,%d, type2:%s,%d, index:%" PRId64 ", bytes:%d",
@@ -520,6 +534,7 @@ int32_t raftEntryCacheGetEntry(struct SRaftEntryCache* pCache, SyncIndex index,
   if (code == 1) {
     *ppEntry = taosMemoryMalloc(pEntry->bytes);
     memcpy(*ppEntry, pEntry, pEntry->bytes);
+    (*ppEntry)->rid = -1;
   } else {
     *ppEntry = NULL;
   }
@@ -541,6 +556,7 @@ int32_t raftEntryCacheGetEntryP(struct SRaftEntryCache* pCache, SyncIndex index,
     SSkipListNode** ppNode = (SSkipListNode**)taosArrayGet(entryPArray, 0);
     ASSERT(*ppNode != NULL);
     *ppEntry = (SSyncRaftEntry*)SL_GET_NODE_DATA(*ppNode);
+    taosAcquireRef(pCache->refMgr, (*ppEntry)->rid);
     code = 1;
 
   } else if (arraySize == 0) {
@@ -600,7 +616,9 @@ int32_t raftEntryCacheClear(struct SRaftEntryCache* pCache, int32_t count) {
       taosArrayPush(delNodeArray, &pNode);
       ++returnCnt;
       SSyncRaftEntry* pEntry = (SSyncRaftEntry*)SL_GET_NODE_DATA(pNode);
-      syncEntryDestory(pEntry);
+
+      // syncEntryDestory(pEntry);
+      taosRemoveRef(pCache->refMgr, pEntry->rid);
     }
     tSkipListDestroyIter(pIter);
 
diff --git a/source/libs/sync/src/syncRaftStore.c b/source/libs/sync/src/syncRaftStore.c
index fbfeb031f63c244d0d5a7c9cd689815d2e0f9fba..908587303624a305e03fcd7034417394eb9e71c0 100644
--- a/source/libs/sync/src/syncRaftStore.c
+++ b/source/libs/sync/src/syncRaftStore.c
@@ -216,7 +216,7 @@ cJSON *raftStore2Json(SRaftStore *pRaftStore) {
 
 char *raftStore2Str(SRaftStore *pRaftStore) {
   cJSON *pJson = raftStore2Json(pRaftStore);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
diff --git a/source/libs/sync/src/syncRespMgr.c b/source/libs/sync/src/syncRespMgr.c
index 3c63b7692a95f7a91370d4cead683919dba65d2f..501f1fb4354d1230d7d13e9de695579126a6407e 100644
--- a/source/libs/sync/src/syncRespMgr.c
+++ b/source/libs/sync/src/syncRespMgr.c
@@ -129,7 +129,7 @@ void syncRespCleanByTTL(SSyncRespMgr *pObj, int64_t ttl) {
 
   while (pStub) {
     size_t    len;
-    void     *key = taosHashGetKey(pStub, &len);
+    void *    key = taosHashGetKey(pStub, &len);
     uint64_t *pSeqNum = (uint64_t *)key;
     sum++;
 
diff --git a/source/libs/sync/src/syncSnapshot.c b/source/libs/sync/src/syncSnapshot.c
index 279a70cb19a362bb1350fa1df8cabc104bce5870..702e9f01dcb250b8c07c776865f8f274eff89f20 100644
--- a/source/libs/sync/src/syncSnapshot.c
+++ b/source/libs/sync/src/syncSnapshot.c
@@ -374,14 +374,14 @@ cJSON *snapshotSender2Json(SSyncSnapshotSender *pSender) {
 
 char *snapshotSender2Str(SSyncSnapshotSender *pSender) {
   cJSON *pJson = snapshotSender2Json(pSender);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
 
 char *snapshotSender2SimpleStr(SSyncSnapshotSender *pSender, char *event) {
   int32_t len = 256;
-  char   *s = taosMemoryMalloc(len);
+  char *  s = taosMemoryMalloc(len);
 
   SRaftId  destId = pSender->pSyncNode->replicasId[pSender->replicaIndex];
   char     host[64];
@@ -653,7 +653,7 @@ cJSON *snapshotReceiver2Json(SSyncSnapshotReceiver *pReceiver) {
     cJSON_AddStringToObject(pFromId, "addr", u64buf);
     {
       uint64_t u64 = pReceiver->fromId.addr;
-      cJSON   *pTmp = pFromId;
+      cJSON *  pTmp = pFromId;
       char     host[128] = {0};
       uint16_t port;
       syncUtilU642Addr(u64, host, sizeof(host), &port);
@@ -686,14 +686,14 @@ cJSON *snapshotReceiver2Json(SSyncSnapshotReceiver *pReceiver) {
 
 char *snapshotReceiver2Str(SSyncSnapshotReceiver *pReceiver) {
   cJSON *pJson = snapshotReceiver2Json(pReceiver);
-  char  *serialized = cJSON_Print(pJson);
+  char * serialized = cJSON_Print(pJson);
   cJSON_Delete(pJson);
   return serialized;
 }
 
 char *snapshotReceiver2SimpleStr(SSyncSnapshotReceiver *pReceiver, char *event) {
   int32_t len = 256;
-  char   *s = taosMemoryMalloc(len);
+  char *  s = taosMemoryMalloc(len);
 
   SRaftId  fromId = pReceiver->fromId;
   char     host[128];
diff --git a/source/libs/sync/test/syncConfigChangeSnapshotTest.cpp b/source/libs/sync/test/syncConfigChangeSnapshotTest.cpp
index 8c6c68bbf820bd9bf7cead1cf1e1fe63ed030b40..714d233984072890a269b66f0062ae21e1f539e2 100644
--- a/source/libs/sync/test/syncConfigChangeSnapshotTest.cpp
+++ b/source/libs/sync/test/syncConfigChangeSnapshotTest.cpp
@@ -125,7 +125,7 @@ int32_t SnapshotStartWrite(struct SSyncFSM* pFsm, void* pParam, void** ppWriter)
   return 0;
 }
 
-int32_t SnapshotStopWrite(struct SSyncFSM* pFsm, void* pWriter, bool isApply, SSnapshot *pSnapshot) {
+int32_t SnapshotStopWrite(struct SSyncFSM* pFsm, void* pWriter, bool isApply, SSnapshot* pSnapshot) {
   char logBuf[256] = {0};
   snprintf(logBuf, sizeof(logBuf), "==callback== ==SnapshotStopWrite== pFsm:%p, pWriter:%p, isApply:%d", pFsm, pWriter,
            isApply);
diff --git a/source/libs/sync/test/syncEntryCacheTest.cpp b/source/libs/sync/test/syncEntryCacheTest.cpp
index 1b3d68f95922086f2578f1956513a9f46a7a731b..fd0c41cce9c8ed1d37abe000e5404926f7729fc1 100644
--- a/source/libs/sync/test/syncEntryCacheTest.cpp
+++ b/source/libs/sync/test/syncEntryCacheTest.cpp
@@ -5,8 +5,8 @@
 #include "syncRaftLog.h"
 #include "syncRaftStore.h"
 #include "syncUtil.h"
-#include "tskiplist.h"
 #include "tref.h"
+#include "tskiplist.h"
 
 void logTest() {
   sTrace("--- sync log test: trace");
@@ -51,7 +51,7 @@ SRaftEntryCache* createCache(int maxCount) {
 }
 
 void test1() {
-  int32_t              code = 0;
+  int32_t          code = 0;
   SRaftEntryCache* pCache = createCache(5);
   for (int i = 0; i < 10; ++i) {
     SSyncRaftEntry* pEntry = createEntry(i);
@@ -68,7 +68,7 @@ void test1() {
 }
 
 void test2() {
-  int32_t              code = 0;
+  int32_t          code = 0;
   SRaftEntryCache* pCache = createCache(5);
   for (int i = 0; i < 10; ++i) {
     SSyncRaftEntry* pEntry = createEntry(i);
@@ -77,7 +77,7 @@ void test2() {
   }
   raftEntryCacheLog2((char*)"==test1 write 5 entries==", pCache);
 
-  SyncIndex index = 2;
+  SyncIndex       index = 2;
   SSyncRaftEntry* pEntry = NULL;
 
   code = raftEntryCacheGetEntryP(pCache, index, &pEntry);
@@ -107,7 +107,7 @@ void test2() {
 }
 
 void test3() {
-  int32_t              code = 0;
+  int32_t          code = 0;
   SRaftEntryCache* pCache = createCache(20);
   for (int i = 0; i <= 4; ++i) {
     SSyncRaftEntry* pEntry = createEntry(i);
@@ -122,8 +122,6 @@ void test3() {
   raftEntryCacheLog2((char*)"==test3 write 10 entries==", pCache);
 }
 
-
-
 static void freeObj(void* param) {
   SSyncRaftEntry* pEntry = (SSyncRaftEntry*)param;
   syncEntryLog2((char*)"freeObj: ", pEntry);
@@ -138,19 +136,41 @@ void test4() {
 
   int64_t rid = taosAddRef(testRefId, pEntry);
   sTrace("rid: %ld", rid);
-  
+
   do {
     SSyncRaftEntry* pAcquireEntry = (SSyncRaftEntry*)taosAcquireRef(testRefId, rid);
     syncEntryLog2((char*)"acquire: ", pAcquireEntry);
 
+    taosAcquireRef(testRefId, rid);
     taosAcquireRef(testRefId, rid);
     taosAcquireRef(testRefId, rid);
 
-    taosReleaseRef(testRefId, rid);
-    //taosReleaseRef(testRefId, rid);
+    // taosReleaseRef(testRefId, rid);
+    // taosReleaseRef(testRefId, rid);
   } while (0);
 
   taosRemoveRef(testRefId, rid);
+
+  for (int i = 0; i < 10; ++i) {
+    sTrace("taosReleaseRef, %d", i);
+    taosReleaseRef(testRefId, rid);
+  }
+}
+
+void test5() {
+  int32_t testRefId = taosOpenRef(5, freeObj);
+  for (int i = 0; i < 100; i++) {
+    SSyncRaftEntry* pEntry = createEntry(i);
+    ASSERT(pEntry != NULL);
+
+    int64_t rid = taosAddRef(testRefId, pEntry);
+    sTrace("rid: %ld", rid);
+  }
+
+  for (int64_t rid = 2; rid < 101; rid++) {
+    SSyncRaftEntry* pAcquireEntry = (SSyncRaftEntry*)taosAcquireRef(testRefId, rid);
+    syncEntryLog2((char*)"taosAcquireRef: ", pAcquireEntry);
+  }
 }
 
 int main(int argc, char** argv) {
@@ -158,11 +178,13 @@ int main(int argc, char** argv) {
   tsAsyncLog = 0;
   sDebugFlag = DEBUG_TRACE + DEBUG_SCREEN + DEBUG_FILE + DEBUG_DEBUG;
 
-  test1();
-  test2();
-  test3();
-
-  //test4();
+  /*
+    test1();
+    test2();
+    test3();
+  */
+  test4();
+  // test5();
 
   return 0;
 }
diff --git a/source/libs/sync/test/syncSnapshotReceiverTest.cpp b/source/libs/sync/test/syncSnapshotReceiverTest.cpp
index b744843b1e859bdc34a0bb9706782d9c243c5314..0f8e76f12167d71ea6c5919dbff5e567033b580a 100644
--- a/source/libs/sync/test/syncSnapshotReceiverTest.cpp
+++ b/source/libs/sync/test/syncSnapshotReceiverTest.cpp
@@ -30,7 +30,7 @@ int32_t SnapshotStopRead(struct SSyncFSM* pFsm, void* pReader) { return 0; }
 int32_t SnapshotDoRead(struct SSyncFSM* pFsm, void* pReader, void** ppBuf, int32_t* len) { return 0; }
 
 int32_t SnapshotStartWrite(struct SSyncFSM* pFsm, void* pParam, void** ppWriter) { return 0; }
-int32_t SnapshotStopWrite(struct SSyncFSM* pFsm, void* pWriter, bool isApply, SSnapshot *pSnapshot) { return 0; }
+int32_t SnapshotStopWrite(struct SSyncFSM* pFsm, void* pWriter, bool isApply, SSnapshot* pSnapshot) { return 0; }
 int32_t SnapshotDoWrite(struct SSyncFSM* pFsm, void* pWriter, void* pBuf, int32_t len) { return 0; }
 
 SSyncSnapshotReceiver* createReceiver() {
diff --git a/source/libs/sync/test/syncTestTool.cpp b/source/libs/sync/test/syncTestTool.cpp
index b0a561cb89060ccf0bae93b9803bfd64ba827cf8..9e9769224f18ac29297e8936e7f93fab817612d5 100644
--- a/source/libs/sync/test/syncTestTool.cpp
+++ b/source/libs/sync/test/syncTestTool.cpp
@@ -126,7 +126,7 @@ int32_t SnapshotStartWrite(struct SSyncFSM* pFsm, void* pParam, void** ppWriter)
   return 0;
 }
 
-int32_t SnapshotStopWrite(struct SSyncFSM* pFsm, void* pWriter, bool isApply, SSnapshot *pSnapshot) {
+int32_t SnapshotStopWrite(struct SSyncFSM* pFsm, void* pWriter, bool isApply, SSnapshot* pSnapshot) {
   if (isApply) {
     gSnapshotLastApplyIndex = gFinishLastApplyIndex;
     gSnapshotLastApplyTerm = gFinishLastApplyTerm;
diff --git a/tools/taos-tools b/tools/taos-tools
index 0b8a3373bb7548f8106d13e7d3b0a988d3c4d48a..817cb6ac431ed8ae4c843872cdfc8c201c1e1894 160000
--- a/tools/taos-tools
+++ b/tools/taos-tools
@@ -1 +1 @@
-Subproject commit 0b8a3373bb7548f8106d13e7d3b0a988d3c4d48a
+Subproject commit 817cb6ac431ed8ae4c843872cdfc8c201c1e1894