asp.net memcache 用法点滴。

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~。^_^

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

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>

<appSettings>

<log4net>

<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">

<param name="File" value="LogFiles/"/>

<param name="AppendToFile" value="true"/>

<param name="MaxSizeRollBackups" value="10"/>

<param name="StaticLogFileName" value="false"/>

<param name="DatePattern" value="yyyy-MM-dd".txt""/>

<param name="RollingStyle" value="Date"/>

<layout type="log4net.Layout.PatternLayout">

<param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger %ndc - %message%newline"/>

</layout>

</appender>

<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">

<layout type="log4net.Layout.PatternLayout">

<param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger %ndc - %message%newline" />

</layout>

</appender>

<root>

<level value="ALL" />

<appender-ref ref="RollingLogFileAppender" />

<appender-ref ref="ConsoleAppender" />

</root>

<logger name="Memcached.ClientLibrary">

<level value="WARN" />

</logger>

</log4net>

<add key="connectionstring" value="server=192.168.1.107;database=qd8;UID=sa;PWD=pwd"/>

</appSettings>

<connectionStrings/>

<system.web>

<!--

设置 compilation debug="true" 可将调试符号插入

已编译的页面中。但由于这会

影响性能，因此只在开发过程中将此值

设置为 true。

-->

<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>

<!--

通过 <authentication> 节可以配置 ASP.NET 用来

识别进入用户的

安全身份验证模式。

-->

<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。

<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">

<error statusCode="403" redirect="NoAccess.htm" />

<error statusCode="404" redirect="FileNotFound.htm" />

</customErrors>

-->

<pages>

<controls>

<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

</controls>

</pages>

<httpHandlers>

<remove verb="*" path="*.asmx"/>

<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>

</httpHandlers>

<httpModules>

<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

</httpModules>

</system.web>

<system.codedom>

<compilers>

<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">

<providerOption name="CompilerVersion" value="v3.5"/>

<providerOption name="WarnAsError" value="false"/>

</compiler>

</compilers>

</system.codedom>

<!--

在 Internet 信息服务 7.0 下运行 ASP.NET AJAX 需要 system.webServer

节。对早期版本的 IIS 来说则不需要此节。

-->

<system.webServer>

<validation validateIntegratedModeConfiguration="false"/>

<modules>

<remove name="ScriptModule"/>

<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

</modules>

<handlers>

<remove name="WebServiceHandlerFactory-Integrated"/>

<remove name="ScriptHandlerFactory"/>

<remove name="ScriptHandlerFactoryAppServices"/>

<remove name="ScriptResource"/>

<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

</handlers>

</system.webServer>

<runtime>

<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">

<dependentAssembly>

<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>

<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>

</dependentAssembly>

<dependentAssembly>

<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>

<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>

</dependentAssembly>

</assemblyBinding>

</runtime>

</configuration>

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

在真正的使用过程中，我们还需根据自己的事情情况来对memcache进行设置和调优。略过~~

本文出自 “天道酬勤” 博客，请务必保留此出处http://yuhaitao.blog.51cto.com/3930555/745218