I had the same problem when i tried to disable cache through mod_perl2 own modules. In my case the Cache-Control headers solution pointed here was not sufficient. I followed the http headers through the firefox popular extension and what i saw was that the important "tags" the browser was looking at were: If-Modified-Since: Tue, 05 Jul 2005 06:25:08 GMT If-None-Match: "1bcbb8-ca-25467900" And although the files were indeed modified, the system was not responding as desired. As an example i attach a complet HTTP negotiation: http://localhost/camandules.info/ GET /camandules.info/ HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051010 Firefox/1.0.7 (Ubuntu package 1.0.7) Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Connection: keep-alive Cookie: ### blogum_counter_sesion=1 If-Modified-Since: Tue, 05 Jul 2005 06:25:08 GMT If-None-Match: "1bcbb8-ca-25467900" HTTP/1.x 304 Not Modified Date: Sun, 13 Nov 2005 19:00:52 GMT Server: mod-xslt/1.3.8 Apache/2.0.55 (Unix) mod_apreq2-20050712/2.1.3-dev mod_perl/2.0.1 Perl/v5.8.7 Connection: Keep-Alive Keep-Alive: timeout=15, max=100 Etag: "1bcbb8-ca-25467900" Expires: -1 Cache-Control: max-age=0, no-cache, must-revalidate -------------------------------------------------------- It's important to note that the ETAG was disabled by the directive "FileETag None" (obvioulsy it wasn't working). What i finally do (thanks to mp2 mailinglist) was to erase the input headers (not the output) If-Modified-Since and If-None-Match, then everything appears to work as desired. 2005/11/21, gregory duchesnes <gregory@xxxxxxxxxxxxx>: > Thanks for your answer Nick, > > i still don't understand what mod_expires stand for, but anyway i solved > my problem sending custom "no-cache" headers thanks to mod_headers, and > i work like a charm : > > Header set Expires "Thu, 01 Dec 2003 16:00:00 GMT" > Header set Cache-Control "no-store, no-cache, must-revalidate" > Header set Pragma "no-cache" > > > Nick Kew a écrit : > > >On Monday 21 November 2005 11:36, gregory duchesnes wrote: > > > > > >>Therefore i didn't understand what mod_expires does!? > >> > >>That mechanism i correct in case i don't use mod_expires, but i want to > >>invalidate cache as soon as the client gets the file. > >> > >> > > > >You can invalidate the cache as much as you like (I haven't checked your > >use of mod_expires). But that doesn't stop a browser using the cache if it's > >configured to do so. Your browser very sensibly checks with the server first. > > > > > > > > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > > -- (signatura) Eps, el meu bloc personal http://www.camandules.info --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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