Memcached 是一个高性能的分布式内存对象缓存系统,用于动态Web应用以减轻数据库负载。它通过在内存中缓存数据和对象来减少读取数据库的次数,从而提供动态、数据库驱动网站的速度。Memcached基于一个存储键/值对的hashmap。其守护进程(daemon )是用C写的,但是客户端可以用任何语言来编写,并通过memcached协议与守护进程通信。但是它并不提供冗余(例如,复制其hashmap条目);当某个服务器S停止运行或崩溃了,所有存放在S上的键/值对都将丢失。

Memcached官方:http://danga.com/memcached/

关于Memcached的介绍请参考:Memcached深度分析

下载Windows的Server端

下载地址:http://code.jellycan.com/memcached/

安装Memcache Server(也可以不安装直接启动)

1. 下载memcached的windows稳定版,解压放某个盘下面,比如在c:\memcached
2. 在CMD下输入 "c:\memcached\memcached.exe -d install" 安装.
3. 再输入:"c:\memcached\memcached.exe -d start" 启动。NOTE: 以后memcached将作为windows的一个服务每次开机时自动启动。这样服务器端已经安装完毕了。

如果下载的是二进制的版本,直接运行就可以了,可以加上参数来加以设置。


常用设置:
-p <num>          监听的端口
-l <ip_addr>      连接的IP地址, 默认是本机
-d start          启动memcached服务
-d restart        重起memcached服务
-d stop|shutdown  关闭正在运行的memcached服务
-d install        安装memcached服务
-d uninstall      卸载memcached服务
-u <username>     以<username>的身份运行 (仅在以root运行的时候有效)
-m <num>          最大内存使用,单位MB。默认64MB
-M                内存耗尽时返回错误,而不是删除项
-c <num>          最大同时连接数,默认是1024
-f <factor>       块大小增长因子,默认是1.25
-n <bytes>        最小分配空间,key+value+flags默认是48
-h                显示帮助

然后就可以用.net 的memcached客户端来试一下了。

C# 下可用的API(每个客户端API中都有详细的说明和注释)

https://sourceforge.net/projects/memcacheddotnet/
http://www.codeplex.com/EnyimMemcached/ - Client developed in .NET 2.0 keeping performance and extensibility in

mind. (Supports consistent hashing.) 
http://code.google.com/p/beitmemcached/ - Client developed by BeIT with many new features

转载出处: http://www.yaosansi.com/

----------------------------------------------------------------------------------------

Client调用:

下载示例代码网址: http://sourceforge.net/projects/memcacheddotnet/

C#/.NET memcached client library. This library can be used by .NET projects to access memcached servers. Ported from the Java memcached library located athttp://www.whalin.com/memcached/.

e.g.:

?
001 /**
002  * MemcachedBench.cs
003  *
004  * Copyright (c) 2005
005  * Tim Gebhardt <tim@gebhardtcomputing.com>
006  
007  * Based off of code written by
008  * Greg Whalin <greg@meetup.com>
009  * for his Java Memcached client:
011  
012  *
013  * See the memcached website:
015  *
016  * This module is Copyright (c) 2005 Tim Gebhardt.
017  * All rights reserved.
018  *
019  * This library is free software; you can redistribute it and/or
020  * modify it under the terms of the GNU Lesser General Public
021  * License as published by the Free Software Foundation; either
022  * version 2.1 of the License, or (at your option) any later
023  * version.
024  *
025  * This library is distributed in the hope that it will be
026  * useful, but WITHOUT ANY WARRANTY; without even the implied
027  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
028  * PURPOSE.  See the GNU Lesser General Public License for more
029  * details.
030  *
031  * You should have received a copy of the GNU Lesser General Public
032  * License along with this library; if not, write to the Free Software
033  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
034  *
035  * @author Tim Gebhardt<tim@gebhardtcomputing.com> 
036  * @version 1.0
037  */
038 namespace Memcached.MemcachedBench
039 {
040     using System;
041     using System.Collections;
042   
043     using Memcached.ClientLibrary;
044   
045     public class MemcachedBench 
046     {
047         /// <summary>
048         /// Arguments: 
049         ///     arg[0] = the number of runs to do
050         ///     arg[1] = the run at which to start benchmarking
051         /// </summary>
052         /// <param name="args"></param>
053         [STAThread]
054         public static void Main(String[] args) 
055         {
056             int runs = 100;
057             int start = 200;
058             if(args.Length > 1)
059             {
060                 runs = int.Parse(args[0]);
061                 start = int.Parse(args[1]);
062             }
063   
064             //可以设置多个服务器列表
065             //string[] serverlist = { "127.0.0.1:11211" , "140.192.34.73:11211" };
066             string[] serverlist = { "127.0.0.1:11211" };    //, "140.192.34.73:11211" };
067   
068             // initialize the pool for memcache servers
069             SockIOPool pool = SockIOPool.GetInstance();
070             pool.SetServers(serverlist);
071   
072             pool.InitConnections = 3;
073             pool.MinConnections = 3;
074             pool.MaxConnections = 5;
075   
076             pool.SocketConnectTimeout = 1000;
077             pool.SocketTimeout = 3000;
078   
079             pool.MaintenanceSleep = 30;
080             pool.Failover = true;
081   
082             pool.Nagle = false;
083             pool.Initialize();
084   
085             // initialize the pool for memcache servers
086 //          SockIOPool pool = SockIOPool.Instance;
087 //          pool.Servers = serverlist;
088 //
089 //          pool.InitConn = 5;
090 //          pool.MinConn = 5;
091 //          pool.MaxConn = 50;
092 //          pool.MaintSleep = 30;
093 //          pool.SocketTO = 1000;
094 //
095 //          pool.Nagle = false;
096 //          pool.Initialize();
097   
098 //
099 //          // get client instance
100             MemcachedClient mc = new MemcachedClient();
101             mc.EnableCompression = false;
102   
103 //          MemcachedClient mc = new MemcachedClient();
104 //          mc.CompressEnable = false;
105 //          mc.CompressThreshold = 0;
106 //          mc.Serialize = true;
107   
108             string keyBase = "testKey";
109             string obj = "这是我的字符串This is a test of an object blah blah es, serialization does not seem to slow things down so much.  The gzip compression is horrible horrible performance, so we only use it for very large objects.  I have not done any heavy benchmarking recently";
110   
111             long begin = DateTime.Now.Ticks;
112             for(int i = start; i < start+runs; i++) 
113             {
114                 mc.Set(keyBase + i, obj);
115             }
116             long end = DateTime.Now.Ticks;
117             long time = end - begin;
118   
119             Console.WriteLine(runs + " 设置花费的时间-sets: " + new TimeSpan(time).ToString() + "ms");
120   
121             begin = DateTime.Now.Ticks;
122             int hits = 0;
123             int misses = 0;
124             for(int i = start; i < start+runs; i++) 
125             {
126                 string str = (string) mc.Get(keyBase + i);
127                 Console.WriteLine("key={0},value={1}",keyBase+i,str);
128                 if(str != null)
129                     ++hits;
130                 else
131                     ++misses;
132             }
133             end = DateTime.Now.Ticks;
134             time = end - begin;
135   
136             Console.WriteLine(runs + "读取花费的时间- gets: " + new TimeSpan(time).ToString() + "ms");
137             Console.WriteLine("Cache hits,成功: " + hits.ToString());
138             Console.WriteLine("Cache misses,失败: " + misses.ToString());
139   
140             IDictionary stats = mc.Stats();
141             foreach(string key1 in stats.Keys)
142             {
143                 Console.WriteLine(key1);
144                 Hashtable values = (Hashtable)stats[key1];
145                 foreach(string key2 in values.Keys)
146                 {
147                     Console.WriteLine(key2 + ":" + values[key2]);
148                 }
149                 Console.WriteLine();
150             }
151   
152             SockIOPool.GetInstance().Shutdown();
153             Console.ReadKey();
154         }
155     }
156 }

 

服务器端: https://files.cnblogs.com/wucg/memcached-1.2.6-win32-bin.zip

下载Client库文件及示例,vs2008,.netframework 1.0,2.0 https://files.cnblogs.com/wucg/clientlib.zip

 

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