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Firefox is ignoring cache-control directives
Firefox is not respecting cache-control directives specified in response headers. Below is an example response generated by my application:
Server: Apache-Coyote/1.1 X-Powered-By: Servlet 2.4; JBoss-4.2.3.GA (build: SVNTag=JBoss_4_2_3_GA date=200807181417)/JBossWeb-2.0 Pragma: no-cache Cache-Control: no-cache Expires: Thu, 01 Jan 1970 00:00:00 GMT Content-Type: text/html;charset=ISO-8859-1 Transfer-Encoding: chunked Date: Fri, 25 Jun 2010 16:13:53 GMT
Despite the cache-control: no-cache, and the fact that the page has already expired, when the user navigates away, and then hits the back button, the page is re-displayed from cache. This causes subsequent navigation attempts to fail because the transaction identifiers are stale and have already been used.
Every time Firefox opened
All Replies (2)
Firefox's cache mechanism doesn't have the same rules as an ordinary cache; in fact RFC 2616 suggests that it would be better to diverge in this sense. From RFC 2616 §13.13:
History mechanisms and caches are different. In particular history mechanisms SHOULD NOT try to show a semantically transparent view of the current state of a resource. Rather, a history mechanism is meant to show exactly what the user saw at the time when the resource was retrieved.
I had a similar problem to you and eventually found the following:
Cache-control: no-cache Cache-control: no-store Pragma: no-cache Expires: 0
Modified by Jamie Kitson