Update server/dao.py

server/dao.py

@@ -10,6 +10,16 @@ class customError(Exception):
         print("original exception:",original_exception)
 
 class tableStore:
+    # 使用单例来保证new对象的时候减少负担
+    _instance = None
+
+    def __new__(cls, ots_client, table_name):
+        if cls._instance is None:
+            cls._instance = super(tableStore, cls).__new__(cls)
+            cls._instance.ots_client = ots_client
+            cls._instance.table_name = table_name
+        return cls._instance
+    
     def __init__(self,ots_client,table_name):
         self.ots_client = ots_client
         self.table_name = table_name