如何使用HTTP 1.1标头阻止浏览器缓存我的网页？ [英] How can I stop browsers caching my web page using HTTP 1.1 headers?

问题描述

虽然我已将 Expires 设置为过去的日期，而 Cache-Control 设置为 no-store，no-cache ，我仍然得到我的一个网页缓存。

Although I have set Expires to a date in the past, and Cache-Control to no-store, no-cache, I still get one of my web pages cached.

以下是发送到网页的HTTP标头浏览器：

Here are the HTTP headers sent to the browser:

Date: Tue, 02 Nov 2010 09:13:23 GMT
Server: Apache/2.2.15 (el)
X-Powered-By: PHP/5.2.13
Set-Cookie: PHPSESSID=2luvb7b316lfc8ht570s1l1v84; path=/
Set-Cookie: Newsletter_Counter=17; expires=Wed, 02-Nov-2011 09:13:23 GMT; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 20
Connection: close
Content-Type: text/html; charset=UTF-8

FF 3.6，Safari和IE 8的行为相同。

Same behavior for FF 3.6, Safari and IE 8.

如何让浏览器停止缓存页面？

How do I get browsers to stop caching the page?

推荐答案

以下标题包含总是对我有用（对于HTTP / 1.1）。你应该不需要Pragma：no-cache。

The following headers have always worked well for me (for HTTP/1.1). You should not need Pragma: no-cache.

Cache-Control: no-cache
Expires: <some date in the past>
Vary: *

尝试将我的Vary值更改为我的示例中的星号。

Try changing your Vary value to the asterisk from my example.

每 http ：//www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.44 ：
Vary字段值*表示缓存无法从请求标头中确定后续请求是否该响应是适当的表示。

Per http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.44: "A Vary field value of "*" implies that a cache cannot determine from the request headers of a subsequent request whether this response is the appropriate representation."

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