Re: [squid-users] cache_vary parameter.

On ons, 2007-07-18 at 15:24 -0400, gonzales@linuxlouis.net wrote:

> I'm curious, I don't see much on the cache_vary parameter impact of a
> running Squid service, BUT with it set to cache_vary on (the default)
> there are sites which can't entirely load (such as images
> gif/jpg/etcetera...) also some Audio podcasts don't complete either.

Any example URLs?

> Two questions:
> 1) what is the impact of cache_vary on vs. off(seems to work more
> appropriately)

"cache_vary on" makes Squid cache "Vary" responses. This is URLs where
the server response varies depending on the capabilities and preferences
of the browser.

There is however some sites not responding with correct Vary headers,
causing a bit of problems. Additionally there is many sites having
problems with the ETag on such content breaking in similar manners.

Make sure you have the default suggested broken_vary_encoding rules
active. Without these many sites will fail with "cache_vary on".

> 2) what is with all of the comm_select: timeout lines?

Internal debug information, only shown because you have told Squid to
increase the debug level.. All normal from what I could tell..

Regards
Henrik