diff --git a/include/server/vnode/tsdb/impl/tsdbImpl.h b/include/server/vnode/tsdb/impl/tsdbImpl.h
index 15f611c7032e99bf13db74b64ee20dffcb76a530..04d2ec43c9acc0d42fc5d11a75e95d1e80498c61 100644
--- a/include/server/vnode/tsdb/impl/tsdbImpl.h
+++ b/include/server/vnode/tsdb/impl/tsdbImpl.h
@@ -23,6 +23,7 @@ extern "C" {
 #endif
 
 struct STsdbOptions {
+  size_t lruCacheSize;
   /* TODO */
 };
 
diff --git a/source/dnode/vnode/tsdb/inc/tsdbOptions.h b/source/dnode/vnode/tsdb/inc/tsdbOptions.h
index 4d6a250424d4f7314a518b27c04708cc294d7ddd..a1864829399c7cdccad598b2e68d3209a919c8b5 100644
--- a/source/dnode/vnode/tsdb/inc/tsdbOptions.h
+++ b/source/dnode/vnode/tsdb/inc/tsdbOptions.h
@@ -20,6 +20,10 @@
 extern "C" {
 #endif
 
+extern const STsdbOptions defautlTsdbOptions;
+
+int tsdbValidateOptions(const STsdbOptions *);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/dnode/vnode/tsdb/src/tsdbMain.c b/source/dnode/vnode/tsdb/src/tsdbMain.c
index 61e887dd459bf0ac0d9aaa4ffd39bf1af0a1e153..9f473c3be1a9e339eb9ee441fb4c2ee579cf16b6 100644
--- a/source/dnode/vnode/tsdb/src/tsdbMain.c
+++ b/source/dnode/vnode/tsdb/src/tsdbMain.c
@@ -13,4 +13,20 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "tsdbDef.h"
\ No newline at end of file
+#include "tsdbDef.h"
+
+STsdb *tsdbOpen(const char *path, const STsdbOptions *pTsdbOptions) {
+  STsdb *pTsdb = NULL;
+  /* TODO */
+  return pTsdb;
+}
+
+void tsdbClose(STsdb *pTsdb) {
+  if (pTsdb) {
+    /* TODO */
+  }
+}
+
+void tsdbRemove(const char *path) { taosRemoveDir(path); }
+
+/* ------------------------ STATIC METHODS ------------------------ */
\ No newline at end of file
diff --git a/source/dnode/vnode/tsdb/src/tsdbOptions.c b/source/dnode/vnode/tsdb/src/tsdbOptions.c
index 6dea4a4e57392be988126c579648f39a8270b9bf..1e1a8592852fd91ab53f43a94586dca63e2fd8eb 100644
--- a/source/dnode/vnode/tsdb/src/tsdbOptions.c
+++ b/source/dnode/vnode/tsdb/src/tsdbOptions.c
@@ -11,4 +11,22 @@
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
\ No newline at end of file
+ */
+
+#include "tsdbDef.h"
+
+const STsdbOptions defautlTsdbOptions = {.lruCacheSize = 0};
+
+int tsdbOptionsInit(STsdbOptions *pTsdbOptions) {
+  // TODO
+  return 0;
+}
+
+void tsdbOptionsClear(STsdbOptions *pTsdbOptions) {
+  // TODO
+}
+
+int tsdbValidateOptions(const STsdbOptions *pTsdbOptions) {
+  // TODO
+  return 0;
+}