diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index 8f943133820bfa45a963ad9c36c48ddf60756a98..6cd6f79d8b34dc1bb411bd9a0383dc7ab51ef896 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -438,6 +438,7 @@ endif(${BUILD_ADDR2LINE})
 # ================================================================================================
 # Build test
 # ================================================================================================
+message("contrib tests:" ${BUILD_DEPENDENCY_TESTS})
 if(${BUILD_DEPENDENCY_TESTS})
     add_subdirectory(test EXCLUDE_FROM_ALL)
 endif(${BUILD_DEPENDENCY_TESTS})
diff --git a/contrib/test/CMakeLists.txt b/contrib/test/CMakeLists.txt
index f35cf0d13d7078e6e90f52f3b49a0c579f3d856b..911eca50a7b1ea6f26b4e5cbec50752d844c8820 100644
--- a/contrib/test/CMakeLists.txt
+++ b/contrib/test/CMakeLists.txt
@@ -1,4 +1,6 @@
 # rocksdb
+message("contrib test dir:" ${BUILD_WITH_ROCKSDB})
+
 if(${BUILD_WITH_ROCKSDB})
     add_subdirectory(rocksdb)
 endif(${BUILD_WITH_ROCKSDB})
diff --git a/contrib/test/rocksdb/CMakeLists.txt b/contrib/test/rocksdb/CMakeLists.txt
index b500e0a66158ba33d52d351f4e34462b27771892..5ae1b0395b5c2a4b323c07de19d1298579cfcc3f 100644
--- a/contrib/test/rocksdb/CMakeLists.txt
+++ b/contrib/test/rocksdb/CMakeLists.txt
@@ -1,6 +1,8 @@
+message("contrib test/rocksdb:" ${BUILD_DEPENDENCY_TESTS})
+
 add_executable(rocksdbTest "")
 target_sources(rocksdbTest
     PRIVATE
     "${CMAKE_CURRENT_SOURCE_DIR}/main.c"
 )
-target_link_libraries(rocksdbTest rocksdb)
\ No newline at end of file
+target_link_libraries(rocksdbTest rocksdb)
diff --git a/contrib/test/rocksdb/main.c b/contrib/test/rocksdb/main.c
index d1cbd373da1f8af09b6f46fbfbeb9da27dd43678..09435790cc3f1b0a05b0fe3db73e708243cfaa8f 100644
--- a/contrib/test/rocksdb/main.c
+++ b/contrib/test/rocksdb/main.c
@@ -25,10 +25,12 @@ int main(int argc, char const *argv[]) {
 
   // Read
   rocksdb_readoptions_t *readoptions = rocksdb_readoptions_create();
-  rocksdb_readoptions_set_snapshot(readoptions, rocksdb_create_snapshot(db));
+//rocksdb_readoptions_set_snapshot(readoptions, rocksdb_create_snapshot(db));
+  char buf[256] = {0};
   size_t vallen = 0;
   char * val = rocksdb_get(db, readoptions, "key", 3, &vallen, &err);
-  printf("val:%s\n", val);
+  snprintf(buf, vallen+5, "val:%s", val);
+  printf("%ld %ld %s\n", strlen(val), vallen, buf);
 
   // Update
   // rocksdb_put(db, writeoptions, "key", 3, "eulav", 5, &err);
@@ -43,4 +45,4 @@ int main(int argc, char const *argv[]) {
   rocksdb_close(db);
 
   return 0;
-}
\ No newline at end of file
+}
diff --git a/source/dnode/vnode/CMakeLists.txt b/source/dnode/vnode/CMakeLists.txt
index 9911752f8e23827b7f3700118d499601569e5980..52df20877a68ccde0c43e54de4c8e5b45a31a791 100644
--- a/source/dnode/vnode/CMakeLists.txt
+++ b/source/dnode/vnode/CMakeLists.txt
@@ -82,6 +82,7 @@ target_include_directories(
     PUBLIC "inc"
     PUBLIC "src/inc"
     PUBLIC "${TD_SOURCE_DIR}/include/libs/scalar"
+    PUBLIC "${TD_SOURCE_DIR}/contrib/rocksdb/include"
 )
 target_link_libraries(
     vnode
@@ -98,6 +99,7 @@ target_link_libraries(
 
     # PUBLIC bdb
     # PUBLIC scalar
+    PUBLIC rocksdb
     PUBLIC transport
     PUBLIC stream
     PUBLIC index
diff --git a/source/dnode/vnode/src/inc/tsdb.h b/source/dnode/vnode/src/inc/tsdb.h
index 2a85b191a42839a580da6ff8b65ee4e9c65430b5..b698909af1268bf5e6c216ab0324b45a7479e9ca 100644
--- a/source/dnode/vnode/src/inc/tsdb.h
+++ b/source/dnode/vnode/src/inc/tsdb.h
@@ -343,6 +343,14 @@ struct STsdbFS {
   SArray   *aDFileSet;  // SArray<SDFileSet>
 };
 
+typedef struct {
+  rocksdb_t              *db;
+  rocksdb_options_t      *options;
+  rocksdb_writeoptions_t *writeoptions;
+  rocksdb_readoptions_t  *readoptions;
+  TdThreadMutex           rMutex;
+} SRocksCache;
+
 struct STsdb {
   char          *path;
   SVnode        *pVnode;
@@ -355,6 +363,7 @@ struct STsdb {
   TdThreadMutex  lruMutex;
   SLRUCache     *biCache;
   TdThreadMutex  biMutex;
+  SRocksCache    rCache;
 };
 
 struct TSDBKEY {
@@ -796,6 +805,7 @@ typedef struct {
 
 int32_t tsdbOpenCache(STsdb *pTsdb);
 void    tsdbCloseCache(STsdb *pTsdb);
+int32_t tsdbCacheUpdate(STsdb *pTsdb, tb_uid_t uid, TSDBROW *row);
 int32_t tsdbCacheInsertLast(SLRUCache *pCache, tb_uid_t uid, TSDBROW *row, STsdb *pTsdb);
 int32_t tsdbCacheInsertLastrow(SLRUCache *pCache, STsdb *pTsdb, tb_uid_t uid, TSDBROW *row, bool dup);
 int32_t tsdbCacheGetLastH(SLRUCache *pCache, tb_uid_t uid, SCacheRowsReader *pr, LRUHandle **h);
diff --git a/source/dnode/vnode/src/inc/vnodeInt.h b/source/dnode/vnode/src/inc/vnodeInt.h
index 253d5aebcec2353c1e951c5399256a23681f6850..a3f2c4559f94e36efd68bca259bcfee85650774c 100644
--- a/source/dnode/vnode/src/inc/vnodeInt.h
+++ b/source/dnode/vnode/src/inc/vnodeInt.h
@@ -19,6 +19,7 @@
 #include "executor.h"
 #include "filter.h"
 #include "qworker.h"
+#include "rocksdb/c.h"
 #include "sync.h"
 #include "tRealloc.h"
 #include "tchecksum.h"
diff --git a/source/dnode/vnode/src/tsdb/tsdbCache.c b/source/dnode/vnode/src/tsdb/tsdbCache.c
index 48d33712845503aa8b69911dff837a81968ea319..171a63aa33685f7bb98cb77bf5eaabe5faf244fb 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCache.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCache.c
@@ -43,6 +43,110 @@ static void tsdbCloseBICache(STsdb *pTsdb) {
   }
 }
 
+static void tsdbGetRocksPath(STsdb *pTsdb, char *path) {
+  SVnode *pVnode = pTsdb->pVnode;
+  if (pVnode->pTfs) {
+    if (path) {
+      snprintf(path, TSDB_FILENAME_LEN, "%s%s%s%scache.rdb", tfsGetPrimaryPath(pTsdb->pVnode->pTfs), TD_DIRSEP,
+               pTsdb->path, TD_DIRSEP);
+    }
+  } else {
+    if (path) {
+      snprintf(path, TSDB_FILENAME_LEN, "%s%scache.rdb", pTsdb->path, TD_DIRSEP);
+    }
+  }
+}
+
+static int32_t tsdbOpenRocksCache(STsdb *pTsdb) {
+  int32_t code = 0;
+
+  rocksdb_options_t *options = rocksdb_options_create();
+  if (NULL == options) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _err;
+  }
+
+  rocksdb_options_set_create_if_missing(options, 1);
+  rocksdb_options_set_inplace_update_support(options, 1);
+  rocksdb_options_set_allow_concurrent_memtable_write(options, 0);
+
+  rocksdb_writeoptions_t *writeoptions = rocksdb_writeoptions_create();
+  if (NULL == writeoptions) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _err2;
+  }
+
+  rocksdb_readoptions_t *readoptions = rocksdb_readoptions_create();
+  if (NULL == readoptions) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _err2;
+  }
+
+  char *err = NULL;
+  char  cachePath[TSDB_FILENAME_LEN] = {0};
+  tsdbGetRocksPath(pTsdb, cachePath);
+
+  rocksdb_t *db = rocksdb_open(options, cachePath, &err);
+  if (NULL == db) {
+    code = -1;
+    goto _err3;
+  }
+
+  taosThreadMutexInit(&pTsdb->rCache.rMutex, NULL);
+
+  pTsdb->rCache.options = options;
+  pTsdb->rCache.writeoptions = writeoptions;
+  pTsdb->rCache.readoptions = readoptions;
+  pTsdb->rCache.db = db;
+
+  return code;
+
+_err4:
+  rocksdb_readoptions_destroy(readoptions);
+_err3:
+  rocksdb_writeoptions_destroy(writeoptions);
+_err2:
+  rocksdb_options_destroy(options);
+_err:
+  return code;
+}
+
+static void tsdbCloseRocksCache(STsdb *pTsdb) {
+  rocksdb_close(pTsdb->rCache.db);
+  rocksdb_readoptions_destroy(pTsdb->rCache.readoptions);
+  rocksdb_writeoptions_destroy(pTsdb->rCache.writeoptions);
+  rocksdb_options_destroy(pTsdb->rCache.options);
+}
+
+int32_t tsdbCacheUpdate(STsdb *pTsdb, tb_uid_t uid, TSDBROW *pRow) {
+  int32_t code = 0;
+
+  STSDBRowIter iter = {0};
+  tsdbRowIterOpen(&iter, pRow, pTSchema);
+
+  for (SColVal *pColVal = tsdbRowIterNext(&iter); pColVal; pColVal = tsdbRowIterNext(&iter)) {
+    SColVal *pRColVal = tsdbCacheGetRColVal(pTsdb);
+    if (pRColVal) {
+      // merge pColVal with pRColVal
+    }
+
+    tsdbCachePutRColVal(pColVal);
+  }
+
+  tsdbRowClose(&iter);
+
+  char  *err = NULL;
+  char   buf[256] = {0};
+  size_t vallen = 0;
+  char  *val = rocksdb_get(pTsdb->rCache.db, pTsdb->rCache.readoptions, "key", 3, &vallen, &err);
+  if (val) {
+  } else {
+  }
+  rocksdb_put(pTsdb->rCache.db, pTsdb->rCache.writeoptions, "key", 3, "value", 5, &err);
+
+  return code;
+}
+
 int32_t tsdbOpenCache(STsdb *pTsdb) {
   int32_t    code = 0;
   SLRUCache *pCache = NULL;
@@ -60,6 +164,12 @@ int32_t tsdbOpenCache(STsdb *pTsdb) {
     goto _err;
   }
 
+  code = tsdbOpenRocksCache(pTsdb);
+  if (code != TSDB_CODE_SUCCESS) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _err;
+  }
+
   taosLRUCacheSetStrictCapacity(pCache, false);
 
   taosThreadMutexInit(&pTsdb->lruMutex, NULL);
@@ -80,6 +190,7 @@ void tsdbCloseCache(STsdb *pTsdb) {
   }
 
   tsdbCloseBICache(pTsdb);
+  tsdbCloseRocksCache(pTsdb);
 }
 
 static void getTableCacheKey(tb_uid_t uid, int cacheType, char *key, int *len) {
diff --git a/source/dnode/vnode/src/tsdb/tsdbMemTable.c b/source/dnode/vnode/src/tsdb/tsdbMemTable.c
index d0ff403bf70a96f114b0722bfb13f7ce035edfb4..f480fb6081d78305c3215f330fbcce03f87bf5bd 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMemTable.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMemTable.c
@@ -284,8 +284,8 @@ bool tsdbTbDataIterNext(STbDataIter *pIter) {
 
 int64_t tsdbCountTbDataRows(STbData *pTbData) {
   SMemSkipListNode *pNode = pTbData->sl.pHead;
-  int64_t rowsNum = 0;
-  
+  int64_t           rowsNum = 0;
+
   while (NULL != pNode) {
     pNode = SL_GET_NODE_FORWARD(pNode, 0);
     if (pNode == pTbData->sl.pTail) {
@@ -298,17 +298,17 @@ int64_t tsdbCountTbDataRows(STbData *pTbData) {
   return rowsNum;
 }
 
-void tsdbMemTableCountRows(SMemTable *pMemTable, SHashObj*        pTableMap, int64_t *rowsNum) {
+void tsdbMemTableCountRows(SMemTable *pMemTable, SHashObj *pTableMap, int64_t *rowsNum) {
   taosRLockLatch(&pMemTable->latch);
   for (int32_t i = 0; i < pMemTable->nBucket; ++i) {
     STbData *pTbData = pMemTable->aBucket[i];
     while (pTbData) {
-      void* p = taosHashGet(pTableMap, &pTbData->uid, sizeof(pTbData->uid));
+      void *p = taosHashGet(pTableMap, &pTbData->uid, sizeof(pTbData->uid));
       if (p == NULL) {
         pTbData = pTbData->next;
         continue;
       }
-      
+
       *rowsNum += tsdbCountTbDataRows(pTbData);
       pTbData = pTbData->next;
     }
@@ -668,15 +668,17 @@ static int32_t tsdbInsertColDataToTable(SMemTable *pMemTable, STbData *pTbData,
 
   if (key.ts >= pTbData->maxKey) {
     pTbData->maxKey = key.ts;
-
+    /*
     if (TSDB_CACHE_LAST_ROW(pMemTable->pTsdb->pVnode->config)) {
       tsdbCacheInsertLastrow(pMemTable->pTsdb->lruCache, pMemTable->pTsdb, pTbData->uid, &lRow, true);
-    }
+      }*/
   }
-
+  /*
   if (TSDB_CACHE_LAST(pMemTable->pTsdb->pVnode->config)) {
     tsdbCacheInsertLast(pMemTable->pTsdb->lruCache, pTbData->uid, &lRow, pMemTable->pTsdb);
   }
+  */
+  tsdbCacheUpdate(pMemTable->pTsdb, pTbData->uid, &lRow);
 
   // SMemTable
   pMemTable->minKey = TMIN(pMemTable->minKey, pTbData->minKey);
@@ -736,15 +738,17 @@ static int32_t tsdbInsertRowDataToTable(SMemTable *pMemTable, STbData *pTbData,
 
   if (key.ts >= pTbData->maxKey) {
     pTbData->maxKey = key.ts;
-
+    /*
     if (TSDB_CACHE_LAST_ROW(pMemTable->pTsdb->pVnode->config)) {
       tsdbCacheInsertLastrow(pMemTable->pTsdb->lruCache, pMemTable->pTsdb, pTbData->uid, &lRow, true);
-    }
+      }*/
   }
-
+  /*
   if (TSDB_CACHE_LAST(pMemTable->pTsdb->pVnode->config)) {
     tsdbCacheInsertLast(pMemTable->pTsdb->lruCache, pTbData->uid, &lRow, pMemTable->pTsdb);
   }
+  */
+  tsdbCacheUpdate(pMemTable->pTsdb, pTbData->uid, &lRow);
 
   // SMemTable
   pMemTable->minKey = TMIN(pMemTable->minKey, pTbData->minKey);