/// <summary>
        /// 缓存
        /// </summary>
        /// <param name="conn"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public IList <tb_config_model> GetCacheList(DbConn conn, string key)
        {
            IList <tb_config_model> cacheList = CacheManage.Retrieve(key) as List <tb_config_model>;

            if (cacheList != null && cacheList.Count > 0)
            {
                return(cacheList);
            }
            IList <tb_config_model> list = this.GetList(conn);

            CacheManage.Add(key, list);
            return(list);
        }