Firefox and IE deal with no-cache differently

I just spent a few hours debugging something that I finally tracked down to IE and Firefox dealing with HTTP caching differently. To make a very *long* story short (and believe me, this was a story of hours in Firebug and Fiddler and VS), IE does *not* cache HTTP pages if you send down the no-cache directive. Firefox does not cache HTTPS pages but *caches* HTTP responses even if you send down a no-cache. The fix is simple - send down a no-store directive instead. So instead of 

Cache-Control	no-cache

you send down 
Cache-Control   no-store

I eventually found a Bugzilla bug which deals with this exact scenario. It seems to be a contentious issue with different opinions on what the right behaviour should be. I'm just happy that I get to fix it with just a one-line code change :-)

Response.Cache.SetNoStore();

I'm putting it out there so that some poor soul in the future can save some time. :-)


# Thursday, June 14, 2007 11:08 PM
Comments:
Here's a hack i use,to avoid caching in IE when making xhr calls from javascript.


dest='server.php?a=1&magic='+(new Date().getTime());
xhr.open("GET", dest, true);

Keep Clicking,
Bhasker V Kode
# posted by Blogger Bosky : 3:49 AM, June 17, 2007
 
Hi Sriram,

I have tried in the following way because my request is https.

meta http-equiv="Cache-Control" content="no-store"

But still its not working. Do i need to use - meta https-equiv instead of - meta http-equiv. Or any other reason behind on this for not working.
Kindly suggest. Waiting for your your reply.
Regards
Kuttu
# posted by Anonymous Anonymous : 5:08 AM, July 10, 2007
 
Thanks alot, the no-store solved my caching problem in firefox.
# posted by Anonymous Anonymous : 10:38 PM, February 14, 2008
 
Siriam,thanks so much. I have been chasing my tail round and round with Firefox trying to get a C# .net page to expire (and thus refire the page logic) and yours has been the only reliable logic to work.
# posted by Anonymous Chris Smith : 9:14 PM, May 25, 2008
 
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