/// <summary>
        /// 获取所有活动地区
        /// </summary>
        /// <returns></returns>
        public static async Task <IEnumerable <T_ArearModel> > GetAllAreaAsync()
        {
            var key = $"GetAllAreaAsync";

            using (var client = CacheHelper.CreateCacheClient(DefaultClientName))
            {
                var result = await client.GetOrSetAsync(key, () => DalActivity.GetAllAreaAsync(), ActivityCacheExpiration);

                IEnumerable <T_ArearModel> xhrActivity;
                if (result.Success)
                {
                    xhrActivity = result.Value;
                }
                else
                {
                    Logger.Warn($"获取redis数据失败SelectAllArea:{key};Error:{result.Message}", result.Exception);
                    // redis查询失败查数据库
                    xhrActivity = await DalActivity.GetAllAreaAsync();
                }

                if (xhrActivity != null && xhrActivity.Any())
                {
                    return(xhrActivity);
                }
                return(null);
            }
        }