Comments on: Reason #256794 why IE sucks: Ajax Caching

By: working

working — Mon, 19 Nov 2007 08:10:40 +0000

If using php, put the following headers to response:

$offset = 120;
$ExpStr = “Expires: ” . gmdate(“D, d M Y H:i:s”, time() – $offset) . ” GMT”;
header($ExpStr);
header(“Last-Modified: ” . gmdate(“D, d M Y H:i:s”) . ” GMT”);
header(“Cache-Control: no-cache, max-age=0, must-revalidate”);

works fine with IE.

By: groie

groie — Fri, 20 Jul 2007 10:45:13 +0000

Figures… thanks for help.

By: serious guy

serious guy — Fri, 20 Jul 2007 04:04:56 +0000

hey this is a good idea, we were already setting no-cache HTTP headers with ASP and that worked for one project but the exact same code (javascript and ASP anti-caching stuff) didn’t work on another project on another server. I wouldnt believe me either.

Anyway, the random number on the end of the querystring worked.

Firefox was fine in all cases btw

By: Antonio Kobashikawa Carrasco

Antonio Kobashikawa Carrasco — Fri, 13 Jul 2007 18:17:01 +0000

Also could use differentiator: new Date().getTime() to avoid improbable but possible random number repetition.

By: David Rose

David Rose — Thu, 07 Jun 2007 03:01:56 +0000

Changing the method to POST had no effect for my script. But appending a random number as a parameter in the AJAX request url did the trick. Thanks!

By: John Atkinson

John Atkinson — Thu, 31 May 2007 18:51:13 +0000

excellent work around. still not sure why i would ever want to cache something i’m calling with AJAX. seems against 2.0, but i’m sure there are good examples, i just haven’t come across that yet.

By: allnightlong

allnightlong — Tue, 29 May 2007 13:16:27 +0000

thakns a lot
ur post solve my trouble

By: real_guy_programmer

real_guy_programmer — Mon, 28 May 2007 06:05:19 +0000

Wow, you’re the kinda guy I’m looking for. You solve all of that bull that happens to programmers. I’ve just spent like the last 5 hours trying to solve this shit problem not to mention the countless hours I’ve spent procrastinating on this known problem. Thanks for making my shit life less shitty. To quote Lewis Black: We’ve gone from shitty shitty shitty to stinky farty smelly.

By: dasmotiu zodalif

dasmotiu zodalif — Sat, 12 May 2007 19:01:14 +0000

From another point of view, I’m rather pleased that the default action of the browser is to cache it. That is the behaviour I want. There is a centuries-old proverb: One man’s meat is another man’s poison.

By: rob

rob — Thu, 10 May 2007 13:28:31 +0000

The author is correct that IE caches GET requests made with the XHR object and his workaround is ok. But he bashes IE without realizing how simple and well-documented this problem is, and how this ‘feature’ can actually be beneficial. I know that bashing IE is fashionable, but bashing IE for no good reason is so last year.