Re: Cache Digest just doesn't work?

From: Alex Rousskov <>
Date: Fri, 2 Oct 1998 11:41:45 -0600 (MDT)

On Fri, 2 Oct 1998, Teemu Peltonen wrote:

> We have three Linux boxes running Squid 1.2.beta25. I decided to give
> cache digests a chance, as we have a very busy system and the ICP-queries
> were tying up resources. However, the computers don't communicate with each
> others, i.e. there are no CACHE_DIGEST_HITs.

To see what is going on, try to enable level 5 debugging for the
peer_digest.c module (#72).

> Each of the caches have an unique IP address and it resolves to an unique
> name. However a hostname proxy resolves to three different IP addresses and
> that was a visible hostname.

> On regular intervals I got:
> 907264912.903 362 TCP_IMS_HIT/200 66705 GET
> - NONE/-
> application/cache-digest

This line looks correct. 66705 is a reasonable size for a digest.
> Then I changed visible_hostname to unique for each proxy:
> 907314454.606 2 TCP_MEM_HIT/200 736 GET
> - NONE/-
> application/cache-digest

This line suggests that instead of a digest you've got an error message (too
small object size), but the response code (200) does not support that guess.
Enable debugging to find out what happened.

> What did I do wrong?

The most common problem is access controls for internal objects. There may be
other reasons, of course.

Received on Fri Oct 02 1998 - 10:43:49 MDT

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