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From "Chris Peterson" <>
Subject [users@httpd] Can't figure out where data is being cached
Date Tue, 03 Feb 2009 00:34:48 GMT
I'm having an odd problem which I've had no luck tracking down. I don't even 
know for sure that it's an Apache issue, but I'm hoping somebody here has 
seen it before, or has some new ideas.

I'm running in a somewhat complicated development environment. I've got 
Ubuntu 8.04 running under VirtualBox on an XP SP3 machine. The Ubuntu 
installation includes Apache 2.2.8, PHP 5.2.4. The website under development 
operates out of a VirtualBox shared folder. So I'm editing the files on my 
XP machine, but they are being served from the Apache installation. Make 

Here's the problem. I can change any HTML or PHP files, and the change is 
immediately seen in the browser (either on the XP machine, or the Linux VM). 
But CSS files are being cached somewhere. The only way I can see a change is 
to change the file name every time I make a change. A big pain, obviously. 
The cached CSS pages persist for weeks at least. I haven't found an expiry 

What I can't determine is where these pages are actually cached. It happens 
across different browsers, and clearing the browser cache doesn't help. I'm 
mainly using Firefox, and have the caching disabled using Web Developer. I 
don't have any caching mods enabled in Apache2, and can't find any cache 
folders on the Ubuntu machine. I don't have any proxies running. Even though 
the server and browser are running on the same machine, it looks like data 
might be going out on my LAN (disconnecting the network cable breaks the 
internal connection between XP and the VM). But my router doesn't seem to 
have any caching support, so I don't think that's the problem.

If anybody has any ideas who is caching my CSS files, I'd welcome some input 


Chris L Peterson
Cloudbait Observatory

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