CloudFlare上不遵守缓存控制标头 [英] Cache-Control Headers not respected on CloudFlare

问题描述

我正在尝试缓存一些html页面，就像通过CloudFlare自动缓存图像的方式一样，但是我无法让CloudFlare实际访问其html缓存.

I am trying to get some html pages to be cached, the same way images are automatically cached via CloudFlare but I can't get CloudFlare to actually hits its cache for html.

根据文档(请参阅:

According to the documentation (Ref: https://support.cloudflare.com/hc/en-us/articles/202775670-How-Do-I-Tell-CloudFlare-What-to-Cache-), it's possible to cache anything with a Cache-Control set to public with a max-age greater than 0.

我在原始Nginx服务器上尝试了各种标头组合，但均未成功.从简单的Cache-Control: public, max-age=31536000到更复杂的标头，包括s-maxage=31536000，Pragma: public，ETag: "569ff137-6"，Expires: Thu, 31 Dec 2037 23:55:55 GMT，没有任何结果.

I've tried various combinations of headers on my origin Nginx server without success. From a simple Cache-Control: public, max-age=31536000 to more complex headers including s-maxage=31536000, Pragma: public, ETag: "569ff137-6", Expires: Thu, 31 Dec 2037 23:55:55 GMT without any results.

是否有任何强制CloudFlare从其缓存中提供HTML页面的想法?

Any ideas to force CloudFlare to serve the html pages from their cache?

PS:我在图像上得到了CF-Cache-Status: HIT，它可以正常工作，但在html页面上什么也没有，甚至没有CF-Cache-Status: something.使用适用于html页面的CloudFlare页面规则，它似乎可以正常工作，但我想避免使用它，这主要是因为它太特定于CloudFlare了.我没有从这些页面提供Cookie或任何动态信息.

PS: I am getting the CF-Cache-Status: HIT on the images and it works fine but on the html pages nothing, not even CF-Cache-Status: something. With a CloudFlare page rule for html pages, it seems to work fine but I want to avoid using one, mainly because it's too CloudFlare specific. I am not serving cookies or anything dynamic from these pages.

推荐答案

现在可以让Cloudflare尊重您的Web服务器标头，而不用浏览器缓存TTL设置中描述的最小值覆盖它们.

It is now possible to get Cloudflare to respect your web servers headers instead of overriding them with the minimum described in the Browser Cache TTL setting.

首先导航到Cloudflare仪表板中的缓存"选项卡:

Firstly navigate to the Caching tab in the Cloudflare dashboard:

从这里您可以向下滚动到浏览器缓存过期"设置，从这里您可以在下拉列表中选择检查现有标题":

From here you can scroll down to the "Browser Cache Expiration" setting, from here you can select the "Respect Existing Headers" option in the dropdown:

进一步阅读:

• CloudFlare是否尊重我的Expires和Cache-Control标头中的静态内容?
• 缓存匿名页面浏览量
• 如何缓存静态HTML?

• Does CloudFlare honor my Expires and Cache-Control headers for static content?
• Caching Anonymous Page Views
• How do I cache static HTML?

注意:如果未选择此设置，则Cloudflare将对Cache-Control标头至少应用默认的4小时.设置此设置后，Cloudflare将不会触摸您的Cache-Control标头(即使它们太低或根本没有设置).

Note: If this setting isn't chosen, Cloudflare will apply a default 4 hour minimum to Cache-Control headers. Once this setting is set, Cloudflare will not touch your Cache-Control headers (even if they're low or not at all set).

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