【转载】Memcached Tip 2：Session同步 - Memcached - 运维网

sfyhip 发表于 2015-9-1 13:38:02

【运维网】Memcached Tip 2：Session同步

http://www.cnblogs.com/luminji/archive/2011/08/17/2143371.html
　　
　　http://memcachedproviders.codeplex.com/提供的Memcached客户端支持Asp.net站点中的Session同步，其原理是接管Asp.net的Session处理，同时在后台使用数据库支持完成WEB集群的Session的同步。具体实现步骤如下：
　　1：数据库准备
　　下载完毕Memcached providers之后，在解压目录下有：

　　一个用于创建数据库表，一个用于创建这个provider的需要用到的存储过程。
　　2：配置sessionState
　　sessionState的配置如下，为了完整性期间，这里给出Web.config的全部配置部分，包括分布式缓存的Memcached的配置：

view sourceprint?

<?xml version="1.0"?>

<configuration>
<configSections>
   <section name="cacheProvider" type="MemcachedProviders.Cache.CacheProviderSection,MemcachedProviders" allowDefinition="MachineToApplication" restartOnExternalChanges="true"/>
   <sectionGroup name="enyim.com">
   <section name="memcached" type="Enyim.Caching.Configuration.MemcachedClientSection, Enyim.Caching" />
   </sectionGroup>
   <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
</configSections>
<log4net>

<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
   <layout type="log4net.Layout.PatternLayout">
   <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}]
- %message%newline" />
   </layout>
</appender>


<root>
   <priority value="WARN"/>
   <appender-ref ref="ConsoleAppender">
   <filter type="log4net.Filter.LevelRangeFilter">
      <levelMin value="WARN"/>
      <levelMax value="FATAL"/>
   </filter>
   </appender-ref>
</root>
</log4net>
<enyim.com>
<memcached>
   <servers>
   
   <add address="192.168.0.96" port="11211" />
   
   </servers>
   <socketPool minPoolSize="10" maxPoolSize="100"
               connectionTimeout="00:00:10" deadTimeout="00:02:00" />
</memcached>
</enyim.com>
<cacheProvider defaultProvider="MemcachedCacheProvider">
<providers>
   <add name="MemcachedCacheProvider"
            type="MemcachedProviders.Cache.MemcachedCacheProvider, MemcachedProviders"
            keySuffix="_MySuffix_" defaultExpireTime="2000"/>
</providers>
</cacheProvider>

<connectionStrings>
<add name="ApplicationServices"
      connectionString="Data Source=192.168.0.96;Initial Catalog=ForestFire;User Id=sa;Password=sa;"
      providerName="System.Data.SqlClient" />
</connectionStrings>

<system.web>

<sessionState cookieless="false" regenerateExpiredSessionId="true" mode="Custom"
customProvider="MemcachedSessionProvider">
   <providers>
   <add name="MemcachedSessionProvider" type="MemcachedProviders.Session.SessionStateProvider,MemcachedProviders" connectionStringName="ApplicationServices" dbType="SQL" writeExceptionsToEventLog="false" />
   </providers>
</sessionState>

<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>　　3：代码
　　代码没有任何稀奇的，和传统的Session操作一样，如下：

view sourceprint?

protected void Page_Load(object sender, EventArgs e)
{
try
{
   Session["name"] = "豆腐";
}
catch (Exception err)
{
   Response.Write(err.Message);
}
}

protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = Session["name"].ToString();
}　　全部代码下载如下：WebApplication20110817.rar

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【运维网】Memcached Tip 2：Session同步