I am trying to make caching selective based on cookies set by upstream.
Example: worpress sets wordpress_test_cookie for every page, thus
caching of pages unless Set-Cookie headers are ignored. On the other
ignoring Set-Cookie in general is bad idea, as in this case when other
cookies are set (like wordpress_logged_in) the response will be cached
well - and this is a security (and consistency) disaster.
What I want is to check if specific header or cookie in the response
set and make decision to cache or not based on this information.
Is this possible at all? I couldn’t find anything (like variables) that
allows to examine response for this purpose.
PS: I know that there are some “helper” plugins for wordpress, but
is only one of possible applications, I need a solution that could work
without application support, that is why I am interested in response
Posted at Nginx Forum: