Opened 18 months ago
Last modified 18 months ago
#2563 closed defect
Does not respect cache-control when using proxy_cache_use_stale updating — at Initial Version
| Reported by: | Owned by: | ||
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | documentation | Version: | 1.22.x |
| Keywords: | Cc: | aminvakil@… | |
| uname -a: | Linux hostname 4.19.0-25-amd64 #1 SMP Debian 4.19.289-2 (2023-08-08) x86_64 GNU/Linux | ||
| nginx -V: |
nginx version: nginx/1.22.0
built by gcc 8.3.0 (Debian 8.3.0-6) built with OpenSSL 1.1.1n 15 Mar 2022 TLS SNI support enabled configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_auth_request_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-cc-opt='-g -O2 -fdebug-prefix-map=/path/to/nginx-1.22.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie' |
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Description
We have
`
proxy_cache_use_stale updating ...
`
in our proxy configurations, and on some paths, upstream is sending
`
cache-control: no-cache, no-store, must-revalidate
pragma: no-cache
expires: 0
`
in a 302 response.
It seems that nginx is caching this sometimes, because some clients are receiving 404 and all of those requests are cache_status=UPDATING.
It happens for 1 percent of clients and whenever I try to reproduce this I get cache_status=EXPIRED, so I'm not sure how to go further with this.
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