[squid-users] Reverse Cache with with HTTP-GET argument-caching

Hi everyone,
I'm currently running a squid reverse proxy to cache requests to a php-update script.
The problem I'm facing now is that the requests doesn't seem to be cached because there is an id delivered as an HTTP-GET argument in form of "update.php?extid={1234-5678-...}". Therefor (i assume) access.log is reporting solely TCP_DENIED (even with complete identical requests). Is there a way to include these arguments to the caching procedure?

-- 
Sebastian Latza
mail@sebastian-latza.de