/// <summary>
/// 设置redis的key过期时间
/// </summary>
/// <param name="key">key</param>
/// <param name="expiry">过期TimeSpan</param>
/// <returns></returns>
public bool KeyExpire(string key, TimeSpan?expiry = null)
{
expiry = expiry == null ? new TimeSpan(24, 0, 0) : expiry;
return(RedisProxy.KeyExpire(_redisName, _redisName, key, expiry));
}