我的 asp.net mvc web 应用程序中的 OutputCache 设置.防止缓存的多种语法 [英] OutputCache setting inside my asp.net mvc web application. Multiple syntax to prevent caching

问题描述

我正在开发一个 asp.net MVC Web 应用程序，我需要知道在为我的操作方法定义 OutputCache 时是否有任何差异，如下所示:-

I am working on an asp.net MVC web application and I need to know if there are any differences when defining the OutputCache for my action methods as follow:-

[OutputCache(Duration = 0, Location = OutputCacheLocation.Client, VaryByParam = "*")]

VS

[OutputCache(NoStore = true, Duration = 0, Location="None", VaryByParam = "*")]

VS

[OutputCache(NoStore = true, Duration = 0, VaryByParam = "*")]

以上三个设置都会阻止缓存数据，还是每个设置都有不同的含义?

Will all the above three setting prevent caching the data , or each on have different meaning ?

第二个问题定义 duration=0 和定义之间的主要区别是什么?NoStore=true ?他们都会阻止缓存吗?谢谢

Second question what is the main difference between defining duration=0 & NoStore=true ? will both of them prevent caching ? Thanks

推荐答案

NoStore 属性用于通过设置 NoStore 来通知代理服务器和浏览器它们不应存储缓存内容的永久副本code>Cache-Control: no-store 在请求头中.

The NoStore property is used to inform proxy servers and browser that they should not store a permanent copy of the cached content by setting Cache-Control: no-store within the request header.

Duration 只是指定控制器动作的内容应该被缓存多长时间，例如10 秒.这会将 Cache-Control: max-age 设置为 >= 0.还将 Expires 标头设置为有效时间戳.

Duration simply specifies how long the content of the controller action should be cached, e.g. 10seconds. This will set the Cache-Control: max-age to >= 0. And also sets the Expires header to a valid timestamp.

对于您最初的问题，不，这三个变体的含义不同.

To your initial question, no, the three variations do not have the same meaning.

[OutputCache(Duration = 0, Location = OutputCacheLocation.Client, VaryByParam = "*")]

像这样创建一个缓存头

Cache-Control: private, max-age=0
Expires: Fri, 03 Jan 2014 12:32:15 GMT

<小时>

[OutputCache(NoStore = true, Duration = 0, Location="None", VaryByParam = "*")]

创建以下缓存头:

Cache-Control: no-cache, no-store
Pragma: no-cache
Expires: -1

这基本上就是你想通过一切手段防止缓存的情况.VaryByParam 是可选的(至少在 MVC5 中)并且无论如何默认值为*"，因此您可以简单地使用 [OutputCache(NoStore = true, Location = OutputCacheLocation.None)] 代替.

This is basically what you want to see if you want to prevent caching by all means. VaryByParam is optional (at least in MVC5) and the default is "*" anyways, so you can simply use [OutputCache(NoStore = true, Location = OutputCacheLocation.None)] instead.

[OutputCache(NoStore = true, Duration = 0, VaryByParam = "*")]

甚至创建了一个公共缓存控件...

even creates a public cache control...

Cache-Control: public, no-store, max-age=0
Expires: Fri, 03 Jan 2014 12:36:38 GMT

SO 上有一篇很好的帖子，讨论了 max-age=0 和 no-cache 等.

There is a good post on SO which discusses the difference between max-age=0 and no-cache etc..

最后，这三个可能会阻止缓存您的数据，但仍然具有不同的含义.

At the end all three might prevent caching your data but still have different meanings.

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