/// <summary>
        /// 存值
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="expiry">失效时间(计算好的最后到期日期时间)</param>
        /// <returns></returns>
        public static bool Set <T>(string key, T value, TimeSpan?expiry, long DBIndex)
        {
            var manager = new RedisManage((int)DBIndex);

            if (expiry.HasValue)
            {
                return(manager.StringSet <T>(key, value, expiry));
            }
            else
            {
                return(manager.StringSet <T>(key, value, DefaltTime));
            }
        }
 static RedisHelper()
 {
     manager = new RedisManage();
 }
        /// <summary>
        /// 删除缓存
        /// </summary>
        /// <param name="key"></param>
        public static bool Delete(string key, long DBIndex)
        {
            var manager = new RedisManage((int)DBIndex);

            return(manager.KeyDelete(key));
        }