asp.net memcache 用法点滴。

原创

manong 2011-12-19 10:40:32 博主文章分类：MemCache ©著作权

文章标签 职场休闲 asp.net memcache 文章分类 .Net 后端开发

©著作权归作者所有：来自51CTO博客作者manong的原创作品，请联系作者获取转载授权，否则将追究法律责任

看过网上很多人写过对于memcache的用法，但是总感觉写的不是太详细，更多者是互相转载，很多文章过于类同。下面是自己总结的一点memcache的一点使用经验，不足之处望指出，共同学习~。^_^

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1.相关工具的下载。

memcached-1.2.6-win32-bin.zip MemCached服务端程序(for win，不安装也是可以的，但是不安装的话就不方便我们对缓存到内存中cache的管理，所以建议安装上)
Memcached .NET client Library C#/.NET memcached 客户端dll(在项目中需要添加对该文件的dll的引用，位置【memcacheddotnet\trunk\clientlib\src\clientlib\bin\2.0\Release \】)

2.程序代码（C#）

<1>首先把memcacheddotnet\trunk\clientlib\src\clientlib\bin\2.0\Release \目录下的Commons.dll,ICSharpCode.SharpZipLib.dll，log4net.dll，Memcached.ClientLibrary.dll复制到bin目录下，然后在项目中添加对这几个dll的引用。

<2>代码模块。

首先添加对memcache的引用，代码如下：

using Memcached.ClientLibrary;

//数据列表绑定方法

private void Bind()
    {
        int count = 0;
        DataSet ds = null;
        CachePoolInitialized();
        string memCache_list = DqId +"_"+page+"_memcache_list";//列表key
        string memCache_count = DqId + "_" + page + "_memcache_count";//数量key
        MemcachedClient mc = new MemcachedClient();
        mc.EnableCompression = false;
        bool exist = mc.KeyExists(memCache_list);//首先判断该key是否存在
        bool exist2 = mc.KeyExists(memCache_count);//首先判断该key是否存在
        if (exist)
        {
            ds = (DataSet)mc.Get(memCache_list);
        }
        else
        {
            ds = dal.GetCJList(DqId, FlId, start, pageSize);
            mc.Set(memCache_list, ds, DateTime.Now.AddSeconds(300));//设置cache
        }
        if (exist2)
        {
            count = Convert.ToInt32(mc.Get(memCache_count));//获取cache
        }
        else
        {
            dal.GetCJCount(DqId, FlId, out count);//获取cache
            mc.Set(memCache_count, count, DateTime.Now.AddSeconds(300));//设置cache
        }
        Literal1.Text = GetPageNum(ds.Tables[0], count, RepLink, pageSize);//自定义的分页方法
        RepLink.DataSource = ds;
        RepLink.DataBind();
    }

//创建memCache的实例

protected void CachePoolInitialized()
    {
        SockIOPool pool = SockIOPool.GetInstance("default");
        if (!pool.Initialized)
        {
            string[] serverlist = { "192.168.1.107:11211" };//cache存放的服务器，这里可以填写多个，然后设定权重，在这里不做详细的解释
            pool.SetServers(serverlist);

pool.InitConnections = 3;//初始化连接数

pool.MinConnections = 3;//最少链接数

pool.MaxConnections = 5;//最大连接数

pool.SocketConnectTimeout = 1000;//socket链接超时时间

pool.SocketTimeout = 3000;//socket超时时间

pool.MaintenanceSleep = 30;//维护线程休息时间

pool.Failover = true;//失效转移(一种备份操作模式)

pool.Nagle = false;//是否用nagle算法启动socket

pool.Initialize();

}
}

==============================================================================

webconfig配置

<?xml version="1.0"?>
<configuration>
<configSections>
  <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
   <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
    <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
    <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
     <section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
     <section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
     <section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
     <section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
     <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
    </sectionGroup>

   </sectionGroup>
  </sectionGroup>
</configSections>

</logger>
  </log4net>
  <add key="connectionstring" value="server=192.168.1.107;database=qd8;UID=sa;PWD=pwd"/>
</appSettings>
<connectionStrings/>
<system.web>

  
  <compilation debug="true">
   <assemblies>
    <add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
    <add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
    <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
   </assemblies>
  </compilation>
  
  <authentication mode="Windows"/>
  <!--
            如果在执行请求的过程中出现未处理的错误，
            则通过 <customErrors> 节可以配置相应的处理步骤。具体说来，
            开发人员通过该节可以配置
            要显示的 html 错误页
            以代替错误堆栈跟踪。