Re: [squid-users] Cache-digest configuration problem

Thank you very much Henrik for your reply!
Everything is working. :)
A piece of my logfile for others:

1268176051.830 7 10.95.4.46 TCP_MISS/200 1315 GET
http://www.the-west.gr/images/index/mini.png - CD_SIBLING_HIT/10.95.4.50
image/png

By the way, the load balancing method I am using is "Observed member"
(on option of my load balancer) and I have to say that it works just great.

Thanks again!

Henrik Nordström wrote:
> tis 2010-03-09 klockan 20:13 +0200 skrev Giannis Fotopoulos:
>
>> Hi,
>> I'm having some difficulty trying to set up my squid servers to use
>> cache-digests.
>>
>
> Should be automatic unless you explicitly disable it.
>
>
>> First of all, in order to use cache-digests, must I also use ICP?
>>
>
> No.
>
>
>> I do not get any errors, but I do not know even if it's working. What
>> should I see in the access.log?
>>
>
> CD_PARENT_HIT / CD_SIBLING_HIT on parent/sibling cache hits.
>
>
>> My setup is made up of 3 servers(squid on all 3) behind a load balancer
>> on the same subnet.
>>
>
> What load balancing method are you using?
>
>
>> The only thing I can get from squid's logs is (from server-squid1 access
>> log file):
>>
>> TCP_MEM_HIT/200 2366753 GET
>> http://server-squid2:3128/squid-internal-periodic/store_digest - NONE/-
>> application/cache-digest
>>
>
> Thats the digest exchange.
>
>
>> From what I can understand, my server fetches the cache digest. But
>> what happens from there on? What happens if the requested site is found
>> on my sibling's cache? How does squid request it from the sibling cache,
>> and what is seen, if anything, in the logfile?
>>
>
> It requests the objects using HTTP just as any other client.
>
> But a request only takes place if the requested object is not in the
> local cache but the peers cache digest indicates it's available there.
>
> additionally the request must not match hierarchy_stoplist or any cache
> deny rules, or Squid won't consider using a sibling for the request.
>
> Regards
> Henrik
>
>
>
Received on Tue Mar 09 2010 - 23:25:07 MST