A HTTP response is cacheable if it contains a cache validator (ETag, Last-Modified) or an Expires header (or both), provided neither the response or the request that elicited it contain a Cache-Control header explicitely forbidding caching. If the response is cached, it must contain one of the above mentioned headers. If you cannot figure out why the response is cached, and if "Cache-Control: no-cache" is not an option (note that "Cache-Control: no-cache" does not prevent caching - it only forces revalidation each time it is served from cache), you may try to set an explicit expiration date in the past. That way the response would be stale and the cache would be unable to serve it without revalidation with the origin server. Even with this "trick" the cache may be tempted to serve the stale response (for example if there is a max-stale directive in the Cache-Control header). You can discourage it by including "Cache-Control: must-revalidate". I really don't see why your customer does not want the responses to contain a no-cache directive, though. -ascs ________________________________ From: Antoine Prevosto [mailto:antoine.prevosto@xxxxxxxxx] Sent: Sunday, April 09, 2006 1:14 PM To: users@xxxxxxxxxxxxxxxx Subject: Re: [users@httpd] weird caching problem Hi, I guess that if the app (or anything else) doesn't send a no-cache header, or a max-age header, or a session cookie, the .jsp page will be served by the client browser cache, and will not be even received by the HTTP Server. Rgds Antoine. 2006/3/28, Sean Carey <sean.carey@xxxxxxxxx>: Here We Go: I am using apache 2.2 , mod_jk 1.2.15, Tomcat 5.5. The application that I am working on basically has 1 filename. s.jsp but..... There are tons of parameters that are used on the file to make it dynamic. The problem I am having is that the apache server or mod_jk thinks its the same request, so I get major cache problem that cause the page to be skewed. If I add response header no-cache and restart the app it works fine. The company that I am consulting does not want to use a no-cache response header. So I am wondering if there is a way in apache to make sure I am properly getting s.jsp through mod_jk. Any help would be appreciated. Sean --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL: http://httpd.apache.org/userslist.html <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 --------------------------------------------------------------------- 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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