update

db_helper.py

@@ -72,7 +72,7 @@ class RedisHelper(object):
         :return: None
         """
         conn = self.connect()
-        conn.set(key_name, value, ex=expire_time)
+        conn.set(key_name, value, ex=int(expire_time))
 
     def add_data_with_zset(self, key_name, data, expire_time=7*24*3600):
         """