Public bug reported: Binary package hint: apache2
We ran into problems trying to cache a PHP site: every page other than / was cached, but / (as in http://example.com/) wasn't being cached. AFAICT, this is because / is being rewritten internally to 'cgi-bin/php5/index.php'. If I fetch that URL directly it's cached fine. Also, if I put a(n apache) proxy in front of the PHP site and cache on the proxy side, it just works - presumably because the rewriting is hidden from the cache. Before I figured out the proxy trick I was getting pretty desperate so I started adding a bunch of printf-debugs to mod cache and apache to try and figure out what was going on. (The rest of this report is speculation based on that so it may or may not be useful as I was really messing around blindfolded here...) Anyway, what I noticed was this: [Fri Feb 23 16:57:38 2007] [error] add_any_filter_handle: cache_save [Fri Feb 23 16:57:38 2007] [debug] mod_cache.c(142): Adding CACHE_REMOVE_URL filter for / So we've added a cache_save and cache_remove_url filter to the output filters. And at this point, r->uri (the URI stored in the 'request') is still /. But then, [Fri Feb 23 16:57:38 2007] [debug] mod_cache.c(881): /cgi- bin/php5/index.php: cache_remove_url_filter() entry point We invoke cache_remove_url_filter(), but at this point r->uri has changed to the rewritten/internal URI. And the cache_save filter is never invoked - I didn't get far enough in my debugging to work out why though. ** Affects: apache2 (Ubuntu) Importance: Undecided Status: Unconfirmed -- mod cache doesn't cache due to internal redirects https://launchpad.net/bugs/87373 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
