Mercurial > hg > nginx
comparison src/http/ngx_http_write_filter_module.c @ 7702:7015f26aef90
Cache: ignore stale-if-error for 4xx and 5xx codes.
Previously the stale-if-error extension of the Cache-Control upstream header
triggered the return of a stale response for all error conditions that can be
specified in the proxy_cache_use_stale directive. The list of these errors
includes both network/timeout/format errors, as well as some HTTP codes like
503, 504, 403, 429 etc. The latter prevented a cache entry from being updated
by a response with any of these HTTP codes during the stale-if-error period.
Now stale-if-error only works for network/timeout/format errors and ignores
the upstream HTTP code. The return of a stale response for certain HTTP codes
is still possible using the proxy_cache_use_stale directive.
This change also applies to the stale-while-revalidate extension of the
Cache-Control header, which triggers stale-if-error if it is missing.
Reported at
http://mailman.nginx.org/pipermail/nginx/2020-July/059723.html.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Wed, 29 Jul 2020 13:28:04 +0300 |
parents | c19ca381b2e6 |
children | 61e9c078ee3d 94daa42ff5ce |
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7701:8ca47f094d5b | 7702:7015f26aef90 |
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