Re: [squid-users] Squid as reverse proxy to thousands of domains - multiple FQDN objects cached for essentially same object

From: Amos Jeffries <>
Date: Thu, 22 Dec 2011 23:29:11 +1300

On 22/12/2011 10:48 p.m., Kevin Jackson wrote:
> Hi,
> We operate a reverse proxy cache for thousands of domains and this
> works quite well.
> The problem we have is that our cache has to be very big (too big for
> memory) so we rely on some disk cache to serve alot of this.
> Our cache objects are like:
> where some.css is the same file - but Squid sees these separately and
> caches them separately causing our cache to fill up inefficiently.
> Is it possible with Squid to cache this common object once. It isn't
> feasible to have common elements served from a single domain (i.e.
> can't pull in content from
> What I'd like to be able to do is tell Squid these are common objects
> and therefore when it sees these, serve from a "fake" domain
> internally to it so it is transparent to the backend web servers, yet
> other elements are served as normal.
> Is this possible? The net effect would be thousands of separate
> objects being cached once allowing us to serve our cache from memory
> again.

You need the storeurl_rewrite feature. So far only available in Squid-2.7.

Received on Thu Dec 22 2011 - 10:29:18 MST

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