diff --git a/include/libs/stream/streamState.h b/include/libs/stream/streamState.h
index d7c9940b745afc4edc3308f7354d9afe7ab38109..2d36a54288e48dab97805b3b4ed6ec66ec51f127 100644
--- a/include/libs/stream/streamState.h
+++ b/include/libs/stream/streamState.h
@@ -41,6 +41,7 @@ typedef struct STdbState {
   void*                            param;
   void*                            env;
   void*                            compactFactory;
+  rocksdb_cache_t*                 cache;
 
   TDB* db;
   TTB* pStateDb;
diff --git a/source/libs/stream/src/streamStateRocksdb.c b/source/libs/stream/src/streamStateRocksdb.c
index b6838651f0f709cb1c5e5c60212e59e2c8d1bad4..dee215a336964e268c3bfab6f99c43d20eb73178 100644
--- a/source/libs/stream/src/streamStateRocksdb.c
+++ b/source/libs/stream/src/streamStateRocksdb.c
@@ -39,6 +39,11 @@ int defaultKeyComp(void* state, const char* aBuf, size_t aLen, const char* bBuf,
     return ret;
   }
 }
+int streamStateValueIsStale(char* vv) {
+  int64_t ts = 0;
+  taosDecodeFixedI64(vv, &ts);
+  return ts < taosGetTimestampSec() ? 1 : 0;
+}
 int defaultKeyEncode(void* k, char* buf) {
   int len = strlen((char*)k);
   memcpy(buf, (char*)k, len);
@@ -333,7 +338,6 @@ int32_t streaValueIsStale(void* k, int64_t ts) {
 
 typedef struct {
   void* tableOpt;
-  void* lru;  // global or not
 } rocksdbCfParam;
 const char* cfName[] = {"default", "state", "fill", "sess", "func", "parname", "partag"};
 
@@ -486,6 +490,7 @@ int streamInitBackend(SStreamState* pState, char* path) {
   rocksdb_compactionfilterfactory_t* factory = rocksdb_compactionfilterfactory_create(
       NULL, destroyCompactFilteFactory, compactFilteFactoryCreateFilter, compactFilteFactoryName);
   rocksdb_options_set_compaction_filter_factory(opts, factory);
+  rocksdb_cache_t* cache = rocksdb_cache_create_lru(128 << 20);
 
   char* err = NULL;
   int   cfLen = sizeof(ginitDict) / sizeof(ginitDict[0]);
@@ -496,7 +501,7 @@ int streamInitBackend(SStreamState* pState, char* path) {
     cfOpt[i] = rocksdb_options_create_copy(opts);
     // refactor later
     rocksdb_block_based_table_options_t* tableOpt = rocksdb_block_based_options_create();
-    rocksdb_cache_t*                     cache = rocksdb_cache_create_lru(32 << 20);
+    // rocksdb_cache_t*                     cache = rocksdb_cache_create_lru(32 << 20);
     rocksdb_block_based_options_set_block_cache(tableOpt, cache);
 
     rocksdb_filterpolicy_t* filter = rocksdb_filterpolicy_create_bloom(15);
@@ -505,7 +510,6 @@ int streamInitBackend(SStreamState* pState, char* path) {
     rocksdb_options_set_block_based_table_factory((rocksdb_options_t*)cfOpt[i], tableOpt);
 
     param[i].tableOpt = tableOpt;
-    param[i].lru = cache;
   };
 
   rocksdb_comparator_t** pCompare = taosMemoryCalloc(cfLen, sizeof(rocksdb_comparator_t**));
@@ -531,6 +535,7 @@ int streamInitBackend(SStreamState* pState, char* path) {
   pState->pTdbState->param = param;
   pState->pTdbState->env = env;
   pState->pTdbState->compactFactory = factory;
+  pState->pTdbState->cache = cache;
   return 0;
 }
 void streamCleanBackend(SStreamState* pState) {
@@ -560,10 +565,10 @@ void streamCleanBackend(SStreamState* pState) {
     rocksdb_options_destroy(pState->pTdbState->cfOpts[i]);
     rocksdb_comparator_destroy(pState->pTdbState->pCompare[i]);
 
-    rocksdb_cache_destroy(param[i].lru);
     rocksdb_block_based_options_destroy(param[i].tableOpt);
     // rocksdb_compactionfilterfactory_destroy(param[i].filteFactory);
   }
+  rocksdb_cache_destroy(pState->pTdbState->cache);
   taosMemoryFreeClear(pState->pTdbState->cfOpts);
   taosMemoryFree(pState->pTdbState->pCompare);
   taosMemoryFree(pState->pTdbState->param);
@@ -907,6 +912,12 @@ SStreamStateCur* streamStateSeekKeyNext_rocksdb(SStreamState* pState, const SWin
     streamStateFreeCur(pCur);
     return NULL;
   }
+  // skip ttl expired data
+  while (rocksdb_iter_valid(pCur->iter)) {
+    char* val = (char*)rocksdb_iter_value(pCur->iter, NULL);
+    if (!streamStateValueIsStale(val)) break;
+    rocksdb_iter_next(pCur->iter);
+  }
 
   if (rocksdb_iter_valid(pCur->iter)) {
     SStateKey curKey;
@@ -936,8 +947,18 @@ SStreamStateCur* streamStateSeekToLast_rocksdb(SStreamState* pState, const SWinK
   pCur->db = pState->pTdbState->rocksdb;
   pCur->iter = streamStateIterCreate(pState, "state", &pCur->snapshot, &pCur->readOpt);
   rocksdb_iter_seek(pCur->iter, buf, (size_t)klen);
+
   rocksdb_iter_prev(pCur->iter);
+  while (rocksdb_iter_valid(pCur->iter)) {
+    char* val = (char*)rocksdb_iter_value(pCur->iter, NULL);
+    if (!streamStateValueIsStale(val)) break;
+    rocksdb_iter_prev(pCur->iter);
+  }
 
+  if (!rocksdb_iter_valid(pCur->iter)) {
+    streamStateFreeCur(pCur);
+    pCur = NULL;
+  }
   STREAM_STATE_DEL_ROCKSDB(pState, "state", &maxStateKey);
   return pCur;
 }
@@ -955,15 +976,19 @@ SStreamStateCur* streamStateGetCur_rocksdb(SStreamState* pState, const SWinKey*
   int       len = stateKeyEncode((void*)&sKey, buf);
 
   rocksdb_iter_seek(pCur->iter, buf, len);
-  if (rocksdb_iter_valid(pCur->iter)) {
-    SStateKey curKey;
-    size_t    kLen = 0;
-    char*     keyStr = (char*)rocksdb_iter_key(pCur->iter, &kLen);
-    stateKeyDecode((void*)&curKey, keyStr);
 
-    if (stateKeyCmpr(&sKey, sizeof(sKey), &curKey, sizeof(curKey)) == 0) {
-      pCur->number = pState->number;
-      return pCur;
+  if (rocksdb_iter_valid(pCur->iter)) {
+    char* val = (char*)rocksdb_iter_value(pCur->iter, NULL);
+    if (!streamStateValueIsStale(val)) {
+      SStateKey curKey;
+      size_t    kLen = 0;
+      char*     keyStr = (char*)rocksdb_iter_key(pCur->iter, &kLen);
+      stateKeyDecode((void*)&curKey, keyStr);
+
+      if (stateKeyCmpr(&sKey, sizeof(sKey), &curKey, sizeof(curKey)) == 0) {
+        pCur->number = pState->number;
+        return pCur;
+      }
     }
   }
   streamStateFreeCur(pCur);
@@ -1043,6 +1068,16 @@ SStreamStateCur* streamStateSessionSeekKeyCurrentPrev_rocksdb(SStreamState* pSta
     streamStateFreeCur(pCur);
     return NULL;
   }
+  while (rocksdb_iter_valid(pCur->iter)) {
+    char* val = (char*)rocksdb_iter_value(pCur->iter, NULL);
+    if (!streamStateValueIsStale(val)) {
+      break;
+    }
+    rocksdb_iter_prev(pCur->iter);
+  }
+  if (!rocksdb_iter_valid(pCur->iter)) {
+    return NULL;
+  }
 
   int32_t          c = 0;
   size_t           klen;
@@ -1078,6 +1113,11 @@ SStreamStateCur* streamStateSessionSeekKeyCurrentNext_rocksdb(SStreamState* pSta
     streamStateFreeCur(pCur);
     return NULL;
   }
+  const char* iVal = rocksdb_iter_value(pCur->iter, NULL);
+  if (streamStateValueIsStale((char*)iVal)) {
+    streamStateFreeCur(pCur);
+    return NULL;
+  }
   size_t           klen;
   const char*      iKey = rocksdb_iter_key(pCur->iter, &klen);
   SStateSessionKey curKey = {0};
@@ -1191,6 +1231,13 @@ SStreamStateCur* streamStateFillGetCur_rocksdb(SStreamState* pState, const SWinK
     streamStateFreeCur(pCur);
     return NULL;
   }
+  if (rocksdb_iter_valid(pCur->iter)) {
+    const char* iVal = rocksdb_iter_value(pCur->iter, NULL);
+    if (streamStateValueIsStale((char*)iVal)) {
+      streamStateFreeCur(pCur);
+      return NULL;
+    }
+  }
 
   if (rocksdb_iter_valid(pCur->iter)) {
     size_t  kLen;
@@ -1218,11 +1265,13 @@ int32_t streamStateFillGetKVByCur_rocksdb(SStreamStateCur* pCur, SWinKey* pKey,
 
     size_t      vlen = 0;
     const char* valStr = rocksdb_iter_value(pCur->iter, &vlen);
-    if (pVal != NULL) {
-      char* dst = taosMemoryCalloc(1, vlen);
-      memcpy(dst, valStr, vlen);
-      *pVal = dst;
+    char*       dst = NULL;
+    int32_t     len = decodeValueFunc((void*)valStr, vlen, NULL, &dst);
+    if (len < 0) {
+      return -1;
     }
+
+    if (pVal != NULL) *pVal = (char*)dst;
     if (pVLen != NULL) *pVLen = vlen;
 
   } else {