[HttpKernel] Fix that no-cache MUST revalidate with the origin #35304
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…for fresh responses
fabpot
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Thank you @mpdude. |
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…igin (mpdude) This PR was merged into the 3.4 branch. Discussion ---------- [HttpKernel] Fix that no-cache MUST revalidate with the origin | Q | A | ------------- | --- | Branch? | 3.4 | Bug fix? | yes | New feature? | no | Deprecations? | no | Tickets | | License | MIT | Doc PR | From [RFC 7234 Section 5.2.2](https://tools.ietf.org/html/rfc7234#section-5.2.2) > The "no-cache" response directive indicates that the response MUST NOT be used to satisfy a subsequent request without successful validation on the origin server. This allows an origin server to prevent a cache from using it to satisfy a request without contacting it, even by caches that have been configured to send stale responses. This is unconditional – the response must be revalidated right away. (`must-revalidate`, to the contrary, requires revalidation only once the response has become stale.) Commits ------- c8bdcb3 Fix that no-cache requires positive validation with the origin, even for fresh responses
This was referenced Jan 21, 2020
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From RFC 7234 Section 5.2.2
This is unconditional – the response must be revalidated right away.
(
must-revalidate, to the contrary, requires revalidation only once the response has become stale.)