Re: [squid-users] Caching and tracking or 2-level cache rule?

Our clients who need per-page tracking (and most commercial tracking
systems) use a single pixel transparent image with a no-cache header on
every page. It's easily inserted into the pages, and it works
throughout the entire chain of the request, including caching proxies at
the clients ISP and in the client browser cache.

If Squid handled the extra request for each page, you will only get
pages that are served by Squid--and miss browser cache hits, and pages
cached at the ISP. I think you would probably prefer to catch every
hit. And it doesn't require hacking Squid.

Ulf Wendel wrote:

> Hi,
>
> I'm wondering if there's a way to use a reverse proxy without loosing
> full (session-based) user tracking performed by standard CGI (PHP)
> scripts. What I want to do is this:
>
> 1.) Request URL/SID/somepage.php
>
> 2.) Squid
>
> 2.1.) If URL/somepage.php is cached return cached page _and_
> 2.2.) request URL/tracker.php?sid=SID&page=somepage.php
>
> Every request to the webserver that matches a certain pattern is served
> by the reverse proxy (2.1) and causes the reverse proxy to request a
> certain page on a (dedicated) tracking server.
>
> I know I should be able to do this with the Apache. But I'm just curious
> if there's a way to do this with the squid as well? Can I do so using
> the config file? Can it be done using a hook into the squid (C-module)?
>
> Thanks!
>
> Ulf

-- 
Joe Cooper <joe@swelltech.com>
http://www.swelltech.com
Web Caching Appliances and Support