Empty $upstream_http_location variable if response was cached
- by Ivaldi
I would like to cache the response of an redirect.
(Cache the request to some site which returns a redirect and cache the
second request which returns the actual content.)
So far my config looks like this:
location = /proxy {
error_page 301 302 307 = @redir;
resolver 8.8.8.8;
proxy_pass $arg_url;
proxy_intercept_errors on;
proxy_cache pcache;
proxy_cache_key $arg_url;
proxy_cache_valid 200 301 302 307 1d;
proxy_cache_min_uses 1;
proxy_ignore_client_abort on;
proxy_ignore_headers Set-Cookie Expires Cache-Control;
}
location @redir {
resolver 8.8.8.8;
# we need to assign $upstream_http_location to another var in order to use it with proxy_pass
set $target $upstream_http_location;
proxy_pass $target;
proxy_cache predirects;
proxy_cache_key $upstream_http_location;
proxy_cache_valid 200 301 302 307 1d;
proxy_cache_min_uses 1;
proxy_ignore_headers Set-Cookie Expires Cache-Control;
}
It works for the first request or without the 30x codes for proxy_cache_valid in the /proxy part, but $target and $upstream_http_location are empty, if the response was cached.
Is there a nice solution to cache both requests?
Thanks!
