Last week I had strange issue with Firefox cache. One of web application needed tweaking to be more responsive. After playing with apache configuration I tested page load speed using YSlow.
All files have expiry headers and all text files are deflated. Results are still mediocre. Some of dynamically generated css files aren't cached by Firefox 2. IE works as it supposed to do - any subsequent request is handled blazingly fast. I tried it on different installations of Firefox to exclude my browser optimizations side effects. Still the same.
All files have expiry headers and all text files are deflated. Results are still mediocre. Some of dynamically generated css files aren't cached by Firefox 2. IE works as it supposed to do - any subsequent request is handled blazingly fast. I tried it on different installations of Firefox to exclude my browser optimizations side effects. Still the same.
Below are HTTP response headers of css that isn't going to FF cache:
Date: Sat, 01 Mar 2008 07:28:31 GMT
Last-Modified: Sat, 01 Mar 2008 07:26:56 GMT
Expires: Sat, 01 Mar 2008 07:36:56 GMT
Cache-Control: max-age=600
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 18128
Keep-Alive: timeout=10, max=98
Connection: Keep-Alive
Content-Type: text/css
I can't see anything suspicious. Content type is proper, all expire headers are set. Requested file name is named as css.php - does FF makes some assumptions on file extension? I tried turning off Cache-Control header and leave only Expires, but it doesn't work too.
It must be simple detail. Anybody has any clues?
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