Re: [squid-users] squid+wccp hash alotment

Thanks Adrian.

FYI I'm using WCCPv1 and I'm not a very good programer. I can look into
codes and understand the flow but it takes me much time. So can you please
point me to the files/code where I can look.

And I didn't understand what you meant by looking into better 'routing'...

Thanks again.

On Wed, 22 Nov 2006, Adrian Chadd wrote:

> On Wed, Nov 22, 2006, Manoj Rajkarnikar wrote:
> > Hi all.
> >
> > I have a question regarding squid and WCCP. I've noticed an issue with the
> > wccp hash bit alotment to individual cache in a farm for quite some time
> > and have searched alot with no luck. The problem is that in a farm of
> > squid cache (lets say 3 cache servers) connected to a WCCP router, if a
> > server gets disconnected for 10-15 minutes or more and then gets
> > reconnected, the hash bits alotted to that cache is changed. this means
> > that the urls previously served by this server would now go to another
> > cache and thus would take some time to rebuild the cache data.
>
> Yup, thats one of the things that needs to be fixed in the Squid WCCPv2 support.
>
> > I've searched through alot and have come to understand that its the squid
> > that informs the wccp router which bits are to be assigned to which squid
> > server. Is there a way to change the default behaviour of assigning the
> > hash bits to assign them in order of ip address manybe ??
>
> You could modify the code to change the hash algorithm; or look into
> better 'routing' to bump requests over to the cache that would've handled
> it in the past.
>
> I haven't looked into it that much but its on my list of things that need
> fixing with the Squid WCCPv2 support.
>
>
>
> Adrian
>

-- 
Manoj Rajkarnikar 
System Administrator 
Vianet Communications Pvt Ltd
Pulchowk, Lalitpur, Nepal. 
(PH)977-1-5546410