Memcached.ClientLibrary 连接 Memcached服务器数据缓存不了

[Bangor123]

using System;
using System.Collections.Generic;
using Memcached.ClientLibrary;
using BillBlog.Config;
using System.Collections;
/// <summary>
/// Memcached缓存
/// </summary>
public class MemcachedCache
{
    private MemcachedClient client;
    public MemcachedCache()
    {
        SockIOPool pool = SockIOPool.GetInstance();
        string[] strSvrs = { "172.16.100.230" };
        //List<string> listServers =
        //CacheConfigs.GetConfig().MemcachedServers;
        pool.SetServers(strSvrs);
        pool.MinConnections = 3;
        pool.MaxConnections = 5;
        pool.InitConnections = 3;
        pool.SocketConnectTimeout = 5000;
        pool.MaintenanceSleep = 30;
        pool.Failover = true;
        pool.Nagle = false;
        pool.Initialize();
        this.client = new MemcachedClient();
        client.EnableCompression = false;
    }

    public bool Add<T>(string key, T value, TimeSpan duration)
    {
        //if (duration <= TimeSpan.Zero)
        //{
        //    duration = this.MaxDuration;
        //}

        DateTime dt = DateTime.Now.AddMinutes(duration.Minutes);
        return client.Add(key, value, dt);
    }
}

缓存数据老返回false ,请各位大虾指教一下，谢谢！