C#实现Memcached分布式缓存，指定服务器保存变量

说明：Memcached 分为服务器端和客户端， 客户端有多种实现方式，我这里是选择了这个版本 http://sourceforge.net/projects/memcacheddotnet/?source=dlp

第 1 步： 配置环境

1.下载服务器memcached for win32安装。http://www.splinedancer.com/memcached-win32/，www.splinedancer.com/memcached-win32/memcached-1.2.4-Win32-Preview-20080309_bin.zip

  我在源码文件  服务器设置  里面附带了memcached.exe，把memcached.exe这个文件拷贝到C盘新建 文件夹 C:\memcached-1.2.6

2.用管理员方式开口cmd命令窗口 输入： cd C:\memcached-1.2.6 然后输入memcached.exe -d install 就可以把memcached安装为windows服务了。

3.启动服务后，memcached服务默认占用的端口是11211，占用的最大内存默认是64M。

4.可以自己修改端口号，但是需要修改注册表

打开注册表，找到：
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\memcached Server
其中的ImagePath项的值为："c:\memcached-1.2.6\memcached.exe" -d runservice

改成："c:\memcached-1.2.6\memcached.exe" -p 12345 -m 1024 -d runservice
表示可以 缓存 1G数据。端口 12345

第 2 步： 打开Visual Studio 2010  ，新建项目www.memcached.com,这步我就省略了。

第 3步：  添加缓存帮组文件

using System;
using System.Web;
using System.Linq;
using System.Collections;
using System.Collections.Specialized;
using System.Collections.Generic;
using System.Configuration;
using Memcached.ClientLibrary;
namespace www.memcached.com
{
    /// <summary>
    /// 页 面 名：缓存管理类<br/>
    /// 说    明：设置、获取、移除Cache<br/>
    /// 作    者：xxx<br/>
    /// 时    间：2012-12-12(神奇的数字,传说中的12K)<br/>
    /// 修 改 者：<br/>
    /// 修改时间：<br/>
    /// </summary>
    public class CacheHelper
    {
        #region 变量和构造函数
        //缓存服务器地址和端口,这样就实现了分布式缓存。服务器可以多个，用Socket读写数据"127.0.0.1:12345",
        private static Dictionary<string, string> Servers = new Dictionary<string, string>();
        static MemcachedClient mc = null;
        //服务器缓存
        static Dictionary<string, SockIOPool> Servers1 = new Dictionary<string, SockIOPool>();
        static object LOCK_OBJECT = new object();//安全锁定
        /// <summary>
        /// 静态构造函数
        /// </summary>
        static CacheHelper()
        {
            InitServer();
            List<string> keys = Servers.Keys.ToList<string>();
            foreach (var k in Servers.Keys)
            {
                SockIOPool pool = SockIOPool.GetInstance(k);
                string[] s = new string[] { Servers[k] };
                pool.SetServers(s);//设置服务器
                pool.MaxConnections = 10000;
                pool.MinConnections = 10;
                pool.SocketConnectTimeout = 1000;
                pool.SocketTimeout = 100;
                pool.Initialize();//初始化缓存线程池
            }
            //默认池
            List<string> defaultServerList=new  List<string>();
            foreach (var k in Servers.Keys) defaultServerList.Add(Servers[k]);
            SockIOPool defaultPool = SockIOPool.GetInstance("DefaultPool");
            defaultPool.SetServers(defaultServerList.ToArray());//设置服务器
            defaultPool.MaxConnections = 10000;
            defaultPool.MinConnections = 10;
            defaultPool.SocketConnectTimeout = 1000;
            defaultPool.SocketTimeout = 100;
            defaultPool.Initialize(); //初始化默认线程池
            mc = new MemcachedClient(); 
            mc.PoolName = "DefaultPool";
        }
        /// <summary>
        /// 初始化服务器列表，这里默认两台服务器. 
        /// </summary>
        static void InitServer(){
            //这里可以写复杂灵活点，动态从配置文件获取，我这里固定了两个
           Servers.Add("Svr1", ConfigurationManager.AppSettings["Svr1"]);
           Servers.Add("Svr2", ConfigurationManager.AppSettings["Svr2"]);
        }
        private CacheHelper() { }
        #endregion

        #region 获取客户端
            public static MemcachedClient GetClient(string server)
            {
                MemcachedClient current = Singleton<MemcachedClient>.Instance;
                current.PoolName = server;
                return current;
            }
        #endregion

        #region 默认


            #region 写(Set)
            /// <summary>
            /// 设置数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            public static void Set(string key, object value)
            {
                mc.Set(key, value);
            }
            /// <summary>
            /// 设置数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="hashCode">哈希码</param>
            public static void Set(string key, object value, int hashCode)
            {
                mc.Set(key, value, hashCode);
            }
            /// <summary>
            /// 设置数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="expiry">过期时间</param>
            public static void Set(string key, object value, DateTime expiry)
            {
                mc.Set(key, value, expiry);
            }
            /// <summary>
            /// 设置数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="expiry">过期时间</param>
            public static void Set(string key, object value, DateTime expiry, int hashCode)
            {
                mc.Set(key, value, expiry, hashCode);
            }
            #endregion

            #region 读(Get)

            #region 返回泛型
            /// <summary>
            /// 读取数据缓存
            /// </summary>
            /// <param name="key">键</param>
            public static T Get<T>(string key)
            {
                return (T)mc.Get(key);
            }
            /// <summary>
            /// 读取数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="hashCode">哈希码</param>
            public static T Get<T>(string key, int hashCode)
            {
                return (T)mc.Get(key, hashCode);
            }
            /// <summary>
            /// 读取数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="asString">是否把值作为字符串返回</param>
            public static T Get<T>(string key, object value, bool asString)
            {
                return (T)mc.Get(key, value, asString);
            }
            #endregion

            /// <summary>
            /// 读取数据缓存
            /// </summary>
            /// <param name="key">键</param>
            public static object Get(string key)
            {
                return mc.Get(key);
            }
            /// <summary>
            /// 读取数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="hashCode">哈希码</param>
            public static object Get(string key, int hashCode)
            {
                return mc.Get(key, hashCode);
            }
            /// <summary>
            /// 读取数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="asString">是否把值作为字符串返回</param>
            public static object Get(string key, object value, bool asString)
            {
                return mc.Get(key, value, asString);
            }
            #endregion

            #region 批量写(Set)
            /// <summary>
            /// 批量设置数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            public static void SetMultiple(string[] keys, object[] values)
            {
                for (int i = 0; i < keys.Length; i++)
                {
                    mc.Set(keys[i], values[i]);
                }
            }
            /// <summary>
            /// 批量设置数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="hashCode">哈希码</param>
            public static void SetMultiple(string[] keys, object[] values, int[] hashCodes)
            {
                for (int i = 0; i < keys.Length; i++)
                {
                    mc.Set(keys[i], values[i], hashCodes[i]);
                }
            }
            /// <summary>
            /// 批量设置数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="expiry">过期时间</param>
            public static void SetMultiple(string[] keys, object[] values, DateTime[] expirys)
            {
                for (int i = 0; i < keys.Length; i++)
                {
                    mc.Set(keys[i], values[i], expirys[i]);
                }
            }
            /// <summary>
            /// 批量设置数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="expiry">过期时间</param>
            public static void Set(string[] keys, object[] values, DateTime[] expirys, int[] hashCodes)
            {
                for (int i = 0; i < keys.Length; i++)
                {
                    mc.Set(keys[i], values[i], expirys[i], hashCodes[i]);
                }
            }
            #endregion

            #region 批量读取(Multiple),返回哈希表 Hashtable
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            public static Hashtable GetMultiple(string[] keys)
            {
                return mc.GetMultiple(keys);
            }
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            /// <param name="hashCodes">哈希码集合</param>
            public static Hashtable GetMultiple(string[] keys, int[] hashCodes)
            {
                return mc.GetMultiple(keys, hashCodes);
            }
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            /// <param name="hashCodes">哈希码集合</param>
            /// <param name="asString">所有值返回字符</param>
            public static Hashtable GetMultiple(string[] keys, int[] hashCodes, bool asString)
            {
                return mc.GetMultiple(keys, hashCodes, asString);
            }
            #endregion

            #region 批量读取(Multiple),返回对象数组object[]
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            public static object[] GetMultipleArray(string[] keys)
            {
                return mc.GetMultipleArray(keys);
            }
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            /// <param name="hashCodes">哈希码集合</param>
            public static object[] GetMultipleArray(string[] keys, int[] hashCodes)
            {
                return mc.GetMultipleArray(keys, hashCodes);
            }
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            /// <param name="hashCodes">哈希码集合</param>
            /// <param name="asString">所有值返回字符</param>
            public static object[] GetMultipleArray(string[] keys, int[] hashCodes, bool asString)
            {
                return mc.GetMultipleArray(keys, hashCodes, asString);
            }
            #endregion

            #region 批量读取(Multiple),返回泛型集合List[T]
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            public static List<T> GetMultipleList<T>(string[] keys)
            {
                object[] obj = mc.GetMultipleArray(keys);
                List<T> list = new List<T>();
                foreach (object o in obj)
                {
                    list.Add((T)o);
                }
                return list;
            }
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            /// <param name="hashCodes">哈希码集合</param>
            public static List<T> GetMultipleList<T>(string[] keys, int[] hashCodes)
            {
                object[] obj = mc.GetMultipleArray(keys, hashCodes);
                List<T> list = new List<T>();
                foreach (object o in obj)
                {
                    list.Add((T)o);
                }
                return list;
            }
            /// <summary>
            /// 批量读取数据缓存
            /// </summary>
            /// <param name="keys">键集合</param>
            /// <param name="hashCodes">哈希码集合</param>
            /// <param name="asString">所有值返回字符</param>
            public static List<T> GetMultipleList<T>(string[] keys, int[] hashCodes, bool asString)
            {
                object[] obj = mc.GetMultipleArray(keys, hashCodes, asString);
                List<T> list = new List<T>();
                foreach (object o in obj)
                {
                    list.Add((T)o);
                }
                return list;
            }
            #endregion

            #region 替换更新(Replace)
            /// <summary>
            /// 替换更新数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            public static void Replace(string key, object value)
            {
                mc.Replace(key, value);
            }
            /// <summary>
            /// 替换更新数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="hashCode">哈希码</param>
            public static void Replace(string key, object value, int hashCode)
            {
                mc.Replace(key, value, hashCode);
            }
            /// <summary>
            /// 替换更新数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="expiry">过期时间</param>
            public static void Replace(string key, object value, DateTime expiry)
            {
                mc.Replace(key, value, expiry);
            }
            /// <summary>
            /// 替换更新数据缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="value">值</param>
            /// <param name="expiry">过期时间</param>
            public static void Replace(string key, object value, DateTime expiry, int hashCode)
            {
                mc.Replace(key, value, expiry, hashCode);
            }
            #endregion

            #region 删除(Delete)

            /// <summary>
            ///删除指定条件缓存
            /// </summary>
            /// <param name="key">键</param>
            public static bool Delete(string key)
            {
                return mc.Delete(key);
            }
            /// <summary>
            /// 删除指定条件缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="hashCode">哈希码</param>
            /// <param name="expiry">过期时间</param>
            public static bool Delete(string key, int hashCode, DateTime expiry)
            {
                return mc.Delete(key, hashCode, expiry);
            }
            /// <summary>
            /// 删除指定条件缓存
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="expiry">过期时间</param>
            public static bool Delete(string key, DateTime expiry)
            {
                return mc.Delete(key, expiry);
            }

            /// <summary>
            /// 移除全部缓存
            /// </summary>
            public static void RemovAllCache()
            {
                mc.FlushAll();
            }
            /// <summary>
            /// 移除全部缓存
            /// </summary>
            /// <param name="list">移除指定服务器缓存</param>
            public static void RemovAllCache(ArrayList list)
            {
                mc.FlushAll(list);
            }
            #endregion

            #region 是否存在(Exists)
            /// <summary>
            /// 判断指定键的缓存是否存在
            /// </summary>
            /// <param name="key">键</param>
            /// <returns></returns>
            public static bool IsExists(string key)
            {
                return mc.KeyExists(key);
            }
            #endregion

            #region 数值增减

            #region 存储一个数值元素
            /// <summary>
            /// 存储一个数值元素
            /// </summary>
            /// <param name="key">键</param>
            /// <returns></returns>
            public static bool StoreCounter(string key, long counter)
            {
                return mc.StoreCounter(key, counter);
            }
            /// <summary>
            ///  存储一个数值元素
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="inc">增长幅度</param>
            /// <param name="hashCode">哈希码</param>
            /// <returns></returns>
            public static bool StoreCounter(string key, long counter, int hashCode)
            {
                return mc.StoreCounter(key, counter, hashCode);
            }
            #endregion

            #region 获取一个数值元素
            /// <summary>
            /// 获取一个数值元素
            /// </summary>
            /// <param name="key">键</param>
            /// <returns></returns>
            public static long GetCounter(string key)
            {
                return mc.GetCounter(key);
            }
            /// <summary>
            ///  获取一个数值元素
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="hashCode">哈希码</param>
            /// <returns></returns>
            public static long GetCounter(string key, int hashCode)
            {
                return mc.GetCounter(key, hashCode);
            }
            #endregion

            #region 增加一个数值元素的值(Increment)
            /// <summary>
            /// 将一个数值元素增加。 如果元素的值不是数值类型，将其作为0处理
            /// </summary>
            /// <param name="key">键</param>
            /// <returns></returns>
            public static long Increment(string key)
            {
                return mc.Increment(key);
            }
            /// <summary>
            ///  将一个数值元素增加。 如果元素的值不是数值类型，将其作为0处理
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="inc">增长幅度</param>
            /// <returns></returns>
            public static long Increment(string key, long inc)
            {
                return mc.Increment(key, inc);
            }
            /// <summary>
            ///  将一个数值元素增加。 如果元素的值不是数值类型，将其作为0处理
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="inc">增长幅度</param>
            /// <param name="hashCode">哈希码</param>
            /// <returns></returns>
            public static long Increment(string key, long inc, int hashCode)
            {
                return mc.Increment(key, inc, hashCode);
            }
            #endregion

            #region 减小一个数值元素的值(Decrement)
            /// <summary>
            /// 减小一个数值元素的值，减小多少由参数offset决定。 如果元素的值不是数值，以0值对待。如果减小后的值小于0,则新的值被设置为0
            /// </summary>
            /// <param name="key">键</param>
            /// <returns></returns>
            public static long Decrement(string key)
            {
                return mc.Decrement(key);
            }
            /// <summary>
            ///  减小一个数值元素的值，减小多少由参数offset决定。 如果元素的值不是数值，以0值对待。如果减小后的值小于0,则新的值被设置为0
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="inc">增长幅度</param>
            /// <returns></returns>
            public static long Decrement(string key, long inc)
            {
                return mc.Decrement(key, inc);
            }
            /// <summary>
            ///  减小一个数值元素的值，减小多少由参数offset决定。 如果元素的值不是数值，以0值对待。如果减小后的值小于0,则新的值被设置为0
            /// </summary>
            /// <param name="key">键</param>
            /// <param name="inc">增长幅度</param>
            /// <param name="hashCode">哈希码</param>
            /// <returns></returns>
            public static long Decrement(string key, long inc, int hashCode)
            {
                return mc.Decrement(key, inc, hashCode);
            }
            #endregion

            #endregion

            
            #endregion

        #region 指定服务器

        #region 获取(Get)

    /// <summary>
      /// 从指定服务器获取
    /// </summary>
    /// <param name="server">服务器，Svr1，Svr2</param>
            /// <param name="key">键</param>
    /// <returns></returns>
        public static object GetFrom(string server,string key)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Get(key);
        }
        /// <summary>
        /// 从指定服务器获取
        /// </summary>
        /// <param name="server">服务器，Svr1，Svr2</param>
        /// <param name="key">键</param>
        /// <param name="hashCode">哈希码</param>
        public static object GetFrom(string server, string key, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Get(key, hashCode);
        }
        /// <summary>
        /// 从指定服务器获取
        /// </summary>
        /// <param name="server">服务器，Svr1，Svr2</param>
        /// <param name="key">键</param>
        /// <param name="asString">是否把值作为字符串返回</param>
        public static object GetFrom(string server, string key, object value, bool asString)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Get(key, value, asString);
        }
        #endregion

        #region 写入(Set)
        /// <summary>
        ///  设置数据缓存
        /// </summary>
        /// <param name="server">服务器，格式为Svr1，Svr2，Svr3，对应配置文件host</param>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        public static void SetTo(string server,string key, object value)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.Set(key, value);
        }
        /// <summary>
        ///  设置数据缓存
        /// </summary>
        /// <param name="server">服务器，格式为Svr1，Svr2，Svr3，对应配置文件host</param>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="hashCode">哈希码</param>
        public static void SetTo(string server, string key, object value, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.Set(key, value, hashCode);
        }
        /// <summary>
        ///  设置数据缓存
        /// </summary>
        /// <param name="server">服务器，格式为Svr1，Svr2，Svr3，对应配置文件host</param>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="expiry">过期时间</param>
        public static void SetTo(string server, string key, object value, DateTime expiry)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.Set(key, value, expiry);
        }
        /// <summary>
        ///  设置数据缓存
        /// </summary>
        /// <param name="server">服务器，格式为Svr1，Svr2，Svr3，对应配置文件host</param>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="expiry">过期时间</param>
        public static void SetTo(string server, string key, object value, DateTime expiry, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.Set(key, value, expiry, hashCode);
        }
        #endregion

        #region 批量写(Set)
        /// <summary>
        /// 批量设置数据缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        public static void SetMultipleTo(string server, string[] keys, object[] values)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            for (int i = 0; i < keys.Length; i++)
            {
                client.Set(keys[i], values[i]);
            }
        }
        /// <summary>
        /// 批量设置数据缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="hashCode">哈希码</param>
        public static void SetMultipleTo(string server, string[] keys, object[] values, int[] hashCodes)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            for (int i = 0; i < keys.Length; i++)
            {
                client.Set(keys[i], values[i], hashCodes[i]);
            }
        }
        /// <summary>
        /// 批量设置数据缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="expiry">过期时间</param>
        public static void SetMultipleTo(string server, string[] keys, object[] values, DateTime[] expirys)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            for (int i = 0; i < keys.Length; i++)
            {
                client.Set(keys[i], values[i], expirys[i]);
            }
        }
        /// <summary>
        /// 批量设置数据缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="expiry">过期时间</param>
        public static void SetMultipleTo(string server, string[] keys, object[] values, DateTime[] expirys, int[] hashCodes)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            for (int i = 0; i < keys.Length; i++)
            {
                client.Set(keys[i], values[i], expirys[i], hashCodes[i]);
            }
        }
        #endregion

        #region 批量读取(Multiple),返回哈希表 Hashtable
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        public static Hashtable GetMultipleFrom(string server,string[] keys)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.GetMultiple(keys);
        }
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        /// <param name="hashCodes">哈希码集合</param>
        public static Hashtable GetMultipleFrom(string server, string[] keys, int[] hashCodes)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.GetMultiple(keys, hashCodes);
        }
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        /// <param name="hashCodes">哈希码集合</param>
        /// <param name="asString">所有值返回字符</param>
        public static Hashtable GetMultipleFrom(string server, string[] keys, int[] hashCodes, bool asString)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.GetMultiple(keys, hashCodes, asString);
        }
        #endregion

        #region 批量读取(Multiple),返回对象数组object[]
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        public static object[] GetMultipleArrayFrom(string server, string[] keys)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.GetMultipleArray(keys);
        }
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        /// <param name="hashCodes">哈希码集合</param>
        public static object[] GetMultipleArrayFrom(string server, string[] keys, int[] hashCodes)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.GetMultipleArray(keys, hashCodes);
        }
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        /// <param name="hashCodes">哈希码集合</param>
        /// <param name="asString">所有值返回字符</param>
        public static object[] GetMultipleArrayFrom(string server, string[] keys, int[] hashCodes, bool asString)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.GetMultipleArray(keys, hashCodes, asString);
        }
        #endregion

        #region 批量读取(Multiple),返回泛型集合List[T]
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        public static List<T> GetMultipleListFrom<T>(string server, string[] keys)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            object[] obj = client.GetMultipleArray(keys);
            List<T> list = new List<T>();
            foreach (object o in obj)
            {
                list.Add((T)o);
            }
            return list;
        }
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        /// <param name="hashCodes">哈希码集合</param>
        public static List<T> GetMultipleListFrom<T>(string server, string[] keys, int[] hashCodes)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            object[] obj = client.GetMultipleArray(keys, hashCodes);
            List<T> list = new List<T>();
            foreach (object o in obj)
            {
                list.Add((T)o);
            }
            return list;
        }
        /// <summary>
        /// 批量读取数据缓存
        /// </summary>
        /// <param name="keys">键集合</param>
        /// <param name="hashCodes">哈希码集合</param>
        /// <param name="asString">所有值返回字符</param>
        public static List<T> GetMultipleListFrom<T>(string server, string[] keys, int[] hashCodes, bool asString)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            object[] obj = client.GetMultipleArray(keys, hashCodes, asString);
            List<T> list = new List<T>();
            foreach (object o in obj)
            {
                list.Add((T)o);
            }
            return list;
        }
        #endregion

        #region 替换更新(Replace)
        /// <summary>
        /// 替换更新数据缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        public static void ReplaceFrom(string server, string key, object value)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.Replace(key, value);
        }
        /// <summary>
        /// 替换更新数据缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="hashCode">哈希码</param>
        public static void ReplaceFrom(string server, string key, object value, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.Replace(key, value, hashCode);
        }
        /// <summary>
        /// 替换更新数据缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="expiry">过期时间</param>
        public static void ReplaceFrom(string server, string key, object value, DateTime expiry)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.Replace(key, value, expiry);
        }
        /// <summary>
        /// 替换更新数据缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="expiry">过期时间</param>
        public static void ReplaceFrom(string server, string key, object value, DateTime expiry, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.Replace(key, value, expiry, hashCode);
        }
        #endregion

        #region 删除(Delete)

        /// <summary>
        ///删除指定条件缓存
        /// </summary>
        /// <param name="key">键</param>
        public static bool DeleteFrom(string server, string key)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Delete(key);
        }
        /// <summary>
        /// 删除指定条件缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="hashCode">哈希码</param>
        /// <param name="expiry">过期时间</param>
        public static bool DeleteFrom(string server, string key, int hashCode, DateTime expiry)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Delete(key, hashCode, expiry);
        }
        /// <summary>
        /// 删除指定条件缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="expiry">过期时间</param>
        public static bool DeleteFrom(string server, string key, DateTime expiry)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Delete(key, expiry);
        }

        /// <summary>
        /// 移除全部缓存
        /// </summary>
        public static void RemovAllCacheFrom(string server)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.FlushAll();
        }
        /// <summary>
        /// 移除全部缓存
        /// </summary>
        /// <param name="list">移除指定服务器缓存</param>
        public static void RemovAllCacheFrom(string server, ArrayList list)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            client.FlushAll(list);
        }
        #endregion

        #region 是否存在(Exists)
        /// <summary>
        /// 判断指定键的缓存是否存在
        /// </summary>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static bool IsExists(string server,string key)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.KeyExists(key);
        }
        #endregion

        #region 数值增减

        #region 存储一个数值元素
        /// <summary>
        /// 存储一个数值元素
        /// </summary>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static bool StoreCounterTo(string server,string key, long counter)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.StoreCounter(key, counter);
        }
        /// <summary>
        ///  存储一个数值元素
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="inc">增长幅度</param>
        /// <param name="hashCode">哈希码</param>
        /// <returns></returns>
        public static bool StoreCounterTo(string server, string key, long counter, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.StoreCounter(key, counter, hashCode);
        }
        #endregion

        #region 获取一个数值元素
        /// <summary>
        /// 获取一个数值元素
        /// </summary>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static long GetCounterFrom(string server, string key)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.GetCounter(key);
        }
        /// <summary>
        ///  获取一个数值元素
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="hashCode">哈希码</param>
        /// <returns></returns>
        public static long GetCounterFrom(string server, string key, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.GetCounter(key, hashCode);
        }
        #endregion

        #region 增加一个数值元素的值(Increment)
        /// <summary>
        /// 将一个数值元素增加。 如果元素的值不是数值类型，将其作为0处理
        /// </summary>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static long IncrementTo(string server, string key)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Increment(key);
        }
        /// <summary>
        ///  将一个数值元素增加。 如果元素的值不是数值类型，将其作为0处理
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="inc">增长幅度</param>
        /// <returns></returns>
        public static long IncrementTo(string server, string key, long inc)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Increment(key, inc);
        }
        /// <summary>
        ///  将一个数值元素增加。 如果元素的值不是数值类型，将其作为0处理
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="inc">增长幅度</param>
        /// <param name="hashCode">哈希码</param>
        /// <returns></returns>
        public static long IncrementTo(string server, string key, long inc, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Increment(key, inc, hashCode);
        }
        #endregion

        #region 减小一个数值元素的值(Decrement)
        /// <summary>
        /// 减小一个数值元素的值，减小多少由参数offset决定。 如果元素的值不是数值，以0值对待。如果减小后的值小于0,则新的值被设置为0
        /// </summary>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static long DecrementFrom(string server, string key)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Decrement(key);
        }
        /// <summary>
        ///  减小一个数值元素的值，减小多少由参数offset决定。 如果元素的值不是数值，以0值对待。如果减小后的值小于0,则新的值被设置为0
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="inc">增长幅度</param>
        /// <returns></returns>
        public static long DecrementFrom(string server, string key, long inc)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Decrement(key, inc);
        }
        /// <summary>
        ///  减小一个数值元素的值，减小多少由参数offset决定。 如果元素的值不是数值，以0值对待。如果减小后的值小于0,则新的值被设置为0
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="inc">增长幅度</param>
        /// <param name="hashCode">哈希码</param>
        /// <returns></returns>
        public static long DecrementFrom(string server, string key, long inc, int hashCode)
        {
            MemcachedClient client = GetClient(server);
            client.PoolName = server;
            return client.Decrement(key, inc, hashCode);
        }
        #endregion

        #endregion

        #endregion

       
    }

  
}

第 4步： 测试默认服务器

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Memcached.ClientLibrary;
namespace www.memcached.com
{
    [Serializable]
    class A
    {
        public string Name { get; set; }
    }
    public partial class Test : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            CacheHelper.RemovAllCache();
            /*例子1  保存复杂对象*/
            A[] a = new A[] { new A { Name = "刘德华" }, new A { Name = "施瓦辛格" }, new A { Name = "太上老君" } };
            CacheHelper.Set("name", a, DateTime.Now.AddSeconds(10));
            object c = CacheHelper.Get("name");
            A[] b = (A[])c;
            Response.Write(b[2].Name + "<br/>");

            /*例子2  批量获取对象*/
            int[] array = { 1, 2, 3, 4, 5, 6, 7 };
            foreach (int i in array)
            {
                CacheHelper.Set("array" + i, i);
            }
            string[] keys = { "array1", "array2", "array3", "array4", "array5", "array6", "array7" };
            object[] obj = CacheHelper.GetMultipleArray(keys);
            foreach (object o in obj)
            {
                Response.Write(o + "<br/>");
            }
            /*例子3  获取泛型*/
            A a3 = new A { Name = "我是对象" };
            CacheHelper.Set("TType", a3);

            A a4 = CacheHelper.Get<A>("TType");
            Response.Write(a4.Name + "<br/>");
            /*例子4  删除*/
            try
            {
                Response.Write("删除对象TType " + CacheHelper.Delete("TType") + "<br/>");
                A a5 = CacheHelper.Get<A>("TType");
                Response.Write(a5.Name + "<br/>");
            }
            catch (Exception exe)
            {
                Response.Write("获取对象报错，说明对象已经删除，错误信息是：  " + exe.Message + "<br/>");
                Response.Write("删除对象后，判断是否存在： CacheHelper.IsExists：  " + CacheHelper.IsExists("TType") + "<br/>");
            }
            /*例子5  增加,减少*/
            long counter = 10;
            CacheHelper.StoreCounter("number", counter);
            Response.Write("number增加前是：  " + CacheHelper.GetCounter("number") + "<br/>");
            CacheHelper.Increment("number");
            Response.Write("对number增加后是：  " + CacheHelper.GetCounter("number") + "<br/>");

            CacheHelper.Increment("number", 100);
            Response.Write("对number增加100后是：  " + CacheHelper.GetCounter("number") + "<br/>");

            CacheHelper.Decrement("number", 100);
            Response.Write("对number减去100后是：  " + CacheHelper.GetCounter("number") + "<br/>");

            /*例子6  批量读取 泛型  测试*/
            A[] a6 = new A[] { new A { Name = "李嘉图" }, new A { Name = "亚当斯密" }, new A { Name = "苏格拉底" } };
            string[] k6 = { "economy1", "economy2", "economy3" };
            CacheHelper.SetMultiple(k6, a6);
            Response.Write("下面是  泛型 批量  获取对象<br/>");
            List<A> list = CacheHelper.GetMultipleList<A>(k6);
            foreach (A p in list)
            {
                Response.Write(p.Name + "<br/>");
            }
          
        }
    }
}

 

第 5步： 测试指定服务器

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace www.memcached.com
{
    public partial class Test4 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

            CacheHelper.SetTo("Svr1", "Abc", "good1");
            CacheHelper.SetTo("Svr2", "Abc", "good2");
            Response.Write("第一台服务器："+CacheHelper.GetFrom("Svr1", "Abc")+"<br/>");
            Response.Write("第二台服务器：" + CacheHelper.GetFrom("Svr2", "Abc") + "<br/>");

            CacheHelper.StoreCounterTo("Svr1","Count",1);
            CacheHelper.IncrementTo("Svr1", "Count", 10);
            Response.Write("自增结果：" + CacheHelper.GetCounterFrom("Svr1", "Count") + "<br/>");

        }
    }
}

第 6步： 项目配置文件

<?xml version="1.0"?>

<!--
  有关如何配置 ASP.NET 应用程序的详细信息，请访问
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
  <appSettings>
    <add key="Svr1" value="127.0.0.1:12345"/>
    <add key="Svr2" value="192.168.1.26:11211"/>
  </appSettings>

  <system.web>
    <compilation debug="true" targetFramework="4.0" />

    <authentication mode="Forms">
      <forms loginUrl="~/Account/Login.aspx" timeout="2880" />
    </authentication>

    <membership>
      <providers>
        <clear/>
        <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices"
             enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false"
             maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10"
             applicationName="/" />
      </providers>
    </membership>

    <profile>
      <providers>
        <clear/>
        <add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/"/>
      </providers>
    </profile>

    <roleManager enabled="false">
      <providers>
        <clear/>
        <add name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" connectionStringName="ApplicationServices" applicationName="/" />
        <add name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" applicationName="/" />
      </providers>
    </roleManager>

  </system.web>

  <system.webServer>
     <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

 

下面给出项目源码   下载地址  https://files.cnblogs.com/HCCZX/www.memcached.com.rar