Re: [squid-users] Load Balancing Query

Hi Amos,

Thanks for that,

so I need to use carp and sourcehash to do load balancing, right?

but where do I specify in squid to monitor the prots?

I mean if port 8080 is down on 'ServerA' how Squid will know that it
should send the request to 'ServerB' on port 8080?

//Remy

On Mon, 2009-06-15 at 23:05 +1200, Amos Jeffries wrote:
> Mario Remy Almeida wrote:
> > Hi All,
> >
> > Want to know if load balancing is possible with squid by maintaining
> > sessions.
> > Health check should be TCP Ports
> >
> > eg:
> > Server A -> Active port 8080
> > Server B -> Active port 8080
> >
> > Client -> Squid -> Server A and/or B
> >
> > Request 1 comes from 'Client A' Squid forwards the request to 'Server A'
> > Request 2 comes from 'Client A' Squid forwards the request to 'Server A'
> > and so on
> > any further request from 'Client A' squid should only forward to 'Server
> > A' until the session is same
> >
> > if
> >
> > Request 1 comes from 'Client B' Squid forwards the request to 'Server B'
> > Request 2 comes from 'Client B' Squid forwards the request to 'Server B'
> >
> > if 'Server A' fails Squid should forward all the request to 'Server B'
> >
> > //Remy
> >
>
>
> HTTP is stateless. It contains no such thing as sessions. That is a
> browser feature.
>
> What you are looking for is something like CARP or sourcehash peering
> algorithms. They keep all requests for certain URLs sent to the same
> place (CARP) or all requests for the same IP to the same place (sourcehash).
>
> see
> http://www.squid-cache.org/Doc/config/cache_peer
>
>
> Amos

>

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Received on Mon Jun 15 2009 - 11:25:20 MDT