.NET分布式缓存Memcached测试体验
一直在学习关注大访问量网站的缓存是如何实现，之前看过Memcached的资料，忙于没有时间来真正测试一下，今天测试下分布式缓存Memcached首先要在缓存服务器上安装安装：memcached(1.2.6 for Win32)
测试程序部署到本地环境，开发工具VS2008 .NET3.5
使用到memcached 1.2.6 for Win32下载地址：
memcached-1.2.6-win32-bin.zip
好了，下面我们按步骤来测试：
第一、首先到把下载好的memcached 1.2.6解压到C:\memcached目录，分别复制到两台服务器中。
第二、安装memcached服务，在命令提示符输入CD c:\memcached进入到memcached目录，如下图：
之后输入memcached -h 回车，看帮助说明，接下来输入memcached -d install 回车即可自动安装
memcached服务了，如下图：
安装好安装memcached服务后，输入memcached -d start 回车启动memcached服务，如下图：
在两台电脑都按以上操作来安装启动memcached。
第三、下载.NET版memcached客户端API组件来写测试程序。
使用memcacheddotnet，下载地址如下：
http://sourceforge.net/projects/memcacheddotnet/
下载好之后把这些文件Commons.dll，ICSharpCode.SharpZipLib.dll，log4net.dll，
Memcached.ClientLibrary.dll放到bin目录（少一个都不行），之后再到测试项目开发环境引用
Memcached.ClientLibrary.dll，如下图
第四、测试程序：
Memcached.cs
--------------------------------------
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using Memcached.ClientLibrary;
6 using System.Collections;
7
8 namespace Test {
9 public partial class Memcached {
10 private static Memcached _instance = new Memcached();
11 public static Memcached _ {
12 get {
13 return _instance;
14 }
15 }
16
17 string[] servers = { "192.168.1.10:11211","192.168.1.11:11211" };
18 SockIOPool pool;
19 MemcachedClient mc;
20
21 public Memcached() {
22 //初始化池
23 pool = SockIOPool.GetInstance();
24 pool.SetServers(servers);
25
26 pool.InitConnections = 3;
27 pool.MinConnections = 3;
28 pool.MaxConnections = 1000;
29
30 pool.SocketConnectTimeout = 1000;
31 pool.SocketTimeout = 3000;
32
33 pool.MaintenanceSleep = 30;
34 pool.Failover = true;
35
36 pool.Nagle = false;
37 pool.Initialize();
38
39 mc = new MemcachedClient();
40 mc.EnableCompression = false;
41 }
42
43 public void Remove(string key) {
44 mc.Delete(key);
45 }
46
47 public bool Set(string key, object value) {
48 return mc.Set(key, value);
49 }
50
51 public bool Set(string key, object value, int minute) {
52 return mc.Set(key, value, DateTime.Now.AddMinutes(minute));
53 }
54
55 public Hashtable Stats() {
56 return mc.Stats();
57 }
58
59 public object Get(string key) {
60 return mc.Get(key);
61 }
62
63 public bool ContainsKey(string key) {
64 return mc.KeyExists(key);
65 }
66 }
67 public class MemcachedTest {
68 /// <summary>
69 /// 测试缓存
70 /// </summary>
71 public void test() {
72 //写入缓存
73 Console.WriteLine("写入缓存测试：");
74 Console.WriteLine("_______________________________________");
75 if (Memcached._.ContainsKey("cache")) {
76 Console.WriteLine("缓存cache已存在");
77 }
78 else {
79 Memcached._.Set("cache", "写入缓存时间：" + DateTime.Now.ToString());
80 Console.WriteLine("缓存已成功写入到cache");
81 }
82 Console.WriteLine("_______________________________________");
83 Console.WriteLine("读取缓存内容如下：");
84 Console.WriteLine(Memcached._.Get("cache").ToString());
85
86 //测试缓存过期
87 Console.WriteLine("_______________________________________");
88 if (Memcached._.ContainsKey("endCache")) {
89 Console.WriteLine("缓存endCache已存在，过期时间为：" + Memcached._.Get
90
91 ("endCache").ToString());
92 }
93 else {
94 Memcached._.Set("endCache", DateTime.Now.AddMinutes(1).ToString(), 1);
95 Console.WriteLine("缓存已更新写入到endCache");
96 Console.WriteLine("写入时间：" + DateTime.Now.ToString());
97 Console.WriteLine("过期时间：" + DateTime.Now.AddMinutes(1).ToString());
98 }
99
100 //分析缓存状态
101 Hashtable ht = Memcached._.Stats();
102 Console.WriteLine("_______________________________________");
103
104 Console.WriteLine("Memcached Stats:");
105 Console.WriteLine("_______________________________________");
106 foreach (DictionaryEntry de in ht) {
107 Hashtable info = (Hashtable)de.Value;
108 foreach (DictionaryEntry de2 in info) {
109 Console.WriteLine(de2.Key.ToString() + "：" + de2.Value.ToString() + " ");
110 }
111 }
112 }
113 }
114 }
115 Program.cs
--------------------------------------
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.IO;
6
7 namespace Test {
8 class Program {
9 static void Main(string[] args) {
10 MemcachedTest mt = new MemcachedTest();
11 mt.test();
12 Console.ReadLine();
13 }
14 }
15 } 首次执行效果图：
第二次便从缓存中读取：
页:
[1]