asp.net使用redis存储session(RedisSessionStateProvider)

最新推荐文章于 2019-06-22 17:36:00 发布

l3751202

最新推荐文章于 2019-06-22 17:36:00 发布

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分类专栏： C# 文章标签： session redis asp.net

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本文介绍了一种通过Redis实现Web应用高可用性的方法，重点在于使用RedisSessionStateProvider进行session托管，无需修改现有代码，仅需配置web.config即可实现session共享，确保服务器故障时session不丢失。

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近日一直在尝试建立一个真正高可用的负载平衡的方式,可以大大缩减因程序版本更新/服务器维护/突发异常等等导致的服务停止时间.要让web站点实现真正的高可用,势必要进行session共享,防止某一服务器down掉时session也跟着丢失.
通过不断的Google,最终我选择使用微软提供的RedisSessionStateProvider进行session的托管.
使用这个方式的优点:
1.无需自己扩展session provider,对自己代码能力不够自信的小伙伴们放心选择~
2.无需修改现有代码,只需透过web.config配置即可.

这个方式使用起来非常简单,通过nuget安装RedisSessionStateProvider组件,然后修改web.config即可.

1.通过nuget安装RedisSessionStateProvider

这里写图片描述

2.修改web.config配置的Host与port节点,并将ssl改成false.

<sessionState mode="Custom" customProvider="MySessionStateStore">
      <providers>
        <!-- For more details check https://github.com/Azure/aspnet-redis-providers/wiki -->
        <!-- Either use 'connectionString' OR 'settingsClassName' and 'settingsMethodName' OR use 'host','port','accessKey','ssl','connectionTimeoutInMilliseconds' and 'operationTimeoutInMilliseconds'. -->
        <!-- 'throwOnError','retryTimeoutInMilliseconds','databaseId' and 'applicationName' can be used with both options. -->
        <!--
          <add name="MySessionStateStore" 
            host = "127.0.0.1" [String]
            port = "" [number]
            accessKey = "" [String]
            ssl = "false" [true|false]
            throwOnError = "true" [true|false]
            retryTimeoutInMilliseconds = "5000" [number]
            databaseId = "0" [number]
            applicationName = "" [String]
            connectionTimeoutInMilliseconds = "5000" [number]
            operationTimeoutInMilliseconds = "1000" [number]
            connectionString = "<Valid StackExchange.Redis connection string>" [String]
            settingsClassName = "<Assembly qualified class name that contains settings method specified below. Which basically return 'connectionString' value>" [String]
            settingsMethodName = "<Settings method should be defined in settingsClass. It should be public, static, does not take any parameters and should have a return type of 'String', which is basically 'connectionString' value.>" [String]
            loggingClassName = "<Assembly qualified class name that contains logging method specified below>" [String]
            loggingMethodName = "<Logging method should be defined in loggingClass. It should be public, static, does not take any parameters and should have a return type of System.IO.TextWriter.>" [String]
            redisSerializerType = "<Assembly qualified class name that implements Microsoft.Web.Redis.ISerializer>" [String]
          />
        -->
        <add name="MySessionStateStore" type="Microsoft.Web.Redis.RedisSessionStateProvider" host="192.168.0.97"  port="6379" accessKey="" ssl="false" />
      </providers>
    </sessionState>