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A comment on New HTTP standards for caching on the modern web. Parent comment

Re:New HTTP standards for caching on the modern web by bawolff on Thursday October 21, 2021 @05:49PM (#28951242)
Cache-Control: max-age=0, must-revalidate

Sounds like what you want (presuming your server handles 304 logic correctly)

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Re:New HTTP standards for caching on the modern web by forgotmypw17 on Thursday October 21, 2021 @06:16PM (#28951498)
I do want caching to happen, however -- until something changes the page.
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Re:New HTTP standards for caching on the modern web by bawolff on Thursday October 21, 2021 @08:15PM (#28952423)
That directive says - cache, but ask the webserver if the page has changed every time. If the server responds 304 not modified, it uses the cached version.

From a performance perspective though, people on good internet might be dominated by RTT so a 304 might be almost as expensive as a full 200.

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