diff --git a/source/libs/catalog/inc/catalogInt.h b/source/libs/catalog/inc/catalogInt.h
index c4e1fd3078b18d74df3e89a4a9ea2d82f26cef0e..5d76ab6f2537e7ed2a6413bee42e95b739b9186b 100644
--- a/source/libs/catalog/inc/catalogInt.h
+++ b/source/libs/catalog/inc/catalogInt.h
@@ -128,6 +128,7 @@ typedef struct SCtgDebug {
 
 typedef struct SCtgCacheStat {
   uint64_t cacheNum[CTG_CI_MAX_VALUE];
+  uint64_t cacheSize[CTG_CI_MAX_VALUE];
   uint64_t cacheHit[CTG_CI_MAX_VALUE];
   uint64_t cacheNHit[CTG_CI_MAX_VALUE];
 } SCtgCacheStat;
@@ -505,8 +506,9 @@ typedef struct SCtgOperation {
 } SCtgOperation;
 
 typedef struct SCtgCacheItemInfo {
-  char   *name;
-  int32_t flag;
+  char    *name;
+  int32_t  flag;
+  uint32_t persistSize;
 } SCtgCacheItemInfo;
 
 #define CTG_AUTH_READ(_t) ((_t) == AUTH_TYPE_READ || (_t) == AUTH_TYPE_READ_OR_WRITE)
diff --git a/source/libs/catalog/src/ctgCache.c b/source/libs/catalog/src/ctgCache.c
index b0321588651a73da880fa062c9b4e87baa478955..a13a58bec8b1a23efd47427ad0caf07405c87ca7 100644
--- a/source/libs/catalog/src/ctgCache.c
+++ b/source/libs/catalog/src/ctgCache.c
@@ -32,14 +32,14 @@ SCtgOperation gCtgCacheOperation[CTG_OP_MAX] = {{CTG_OP_UPDATE_VGROUP, "update v
                                                 {CTG_OP_CLEAR_CACHE, "clear cache", ctgOpClearCache}};
 
 SCtgCacheItemInfo gCtgStatItem[CTG_CI_MAX_VALUE] = {
-    {"Cluster   ", CTG_CI_FLAG_LEVEL_GLOBAL},  //CTG_CI_CLUSTER
-    {"Dnode     ", CTG_CI_FLAG_LEVEL_CLUSTER}, //CTG_CI_DNODE,
-    {"Qnode     ", CTG_CI_FLAG_LEVEL_CLUSTER}, //CTG_CI_QNODE,
-    {"DB        ", CTG_CI_FLAG_LEVEL_CLUSTER}, //CTG_CI_DB,
-    {"DbVgroup  ", CTG_CI_FLAG_LEVEL_DB},      //CTG_CI_DB_VGROUP,
-    {"DbCfg     ", CTG_CI_FLAG_LEVEL_DB},      //CTG_CI_DB_CFG,
-    {"DbInfo    ", CTG_CI_FLAG_LEVEL_DB},      //CTG_CI_DB_INFO,
-    {"StbMeta   ", CTG_CI_FLAG_LEVEL_DB},      //CTG_CI_STABLE_META,
+    {"Cluster   ", CTG_CI_FLAG_LEVEL_GLOBAL,  sizeof(SCatalog)},    //CTG_CI_CLUSTER
+    {"Dnode     ", CTG_CI_FLAG_LEVEL_CLUSTER, 0},                   //CTG_CI_DNODE,
+    {"Qnode     ", CTG_CI_FLAG_LEVEL_CLUSTER, 0},                   //CTG_CI_QNODE,
+    {"DB        ", CTG_CI_FLAG_LEVEL_CLUSTER, sizeof(SCtgDBCache)}, //CTG_CI_DB,
+    {"DbVgroup  ", CTG_CI_FLAG_LEVEL_DB,      sizeof(SDBVgInfo)},      //CTG_CI_DB_VGROUP,
+    {"DbCfg     ", CTG_CI_FLAG_LEVEL_DB,      0},      //CTG_CI_DB_CFG,
+    {"DbInfo    ", CTG_CI_FLAG_LEVEL_DB,      0},      //CTG_CI_DB_INFO,
+    {"StbMeta   ", CTG_CI_FLAG_LEVEL_DB,     },      //CTG_CI_STABLE_META,
     {"NtbMeta   ", CTG_CI_FLAG_LEVEL_DB},      //CTG_CI_NTABLE_META,
     {"CtbMeta   ", CTG_CI_FLAG_LEVEL_DB},      //CTG_CI_CTABLE_META,
     {"SysTblMeta", CTG_CI_FLAG_LEVEL_DB},      //CTG_CI_SYSTABLE_META,
diff --git a/source/libs/catalog/src/ctgUtil.c b/source/libs/catalog/src/ctgUtil.c
index a2f2a3d556fea5049e643cdbd7be7e753a89e1db..57645e8b879ffb332c48575387abff0ed77aec35 100644
--- a/source/libs/catalog/src/ctgUtil.c
+++ b/source/libs/catalog/src/ctgUtil.c
@@ -1483,3 +1483,10 @@ void ctgGetGlobalCacheStat(SCtgCacheStat *pStat) {
   memcpy(pStat, &gCtgMgmt.statInfo.cache, sizeof(gCtgMgmt.statInfo.cache));
 }
 
+void ctgGetGlobalCacheUsedSize(uint64_t *pSize) {
+  SCtgCacheStat stat;
+  ctgGetGlobalCacheStat(&stat);
+  do;
+  
+}
+