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From Axel-St├ęphane SMORGRAV <Axel-Stephane.SMORG...@europe.adp.com>
Subject RE: [users@httpd] mod_cache and conditional disabling
Date Thu, 25 Aug 2005 08:30:19 GMT
It is possible by doing a bit of rewriting and tweaking of URLs.


Here's the general idea:

RewriteCond %{HTTP_COOKIE}	MYCOOKIE
RewriteRule ^(.*)$ /DONTCACHE$1

ProxyPass /DONTCACHE http://backend.foo.bar/
ProxyPassReverse  /DONTCACHE http://backend.foo.bar/

CacheDisable /DONTCACHE

or something like that.

-ascs


-----Original Message-----
From: Steve McInerney [mailto:steve@stedee.id.au] 
Sent: Thursday, August 25, 2005 8:04 AM
To: users@httpd.apache.org
Subject: [users@httpd] mod_cache and conditional disabling

Hi,

As part of implementing a short term performance improvement, we're looking at using a caching
reverse proxy.


In essence we need to be able to disable mod_cache on a reverse proxy configuration for certain
classes of users only.

Users are able to be identified via Cookie and hence we can get an Env set for that identification.
But I can't figure out a way to disable the caching based on this information.

Unfortunately, all the URL's remain the same for normal and "special"
users, so the normal CacheDisable Directive don't work.


I've tried using mod_rewrite and a proxy rule (ie [P]) without any success
- the resulting output is still cached, tho that could be PEBKAC.


Any ideas or insight would be greatly appreciated.


Cheers!


- Steve


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