Re: [squid-users] clustering squid

> Hello,
>
> I am looking to utilize squid as a reverse proxy for a medium sized
> implementation that will need to scale to a lot of requests/sec (a lot
> is a relative/unknown term). I found this very informative thread:
> http://www.squid-cache.org/mail-archive/squid-users/200704/0089.html
>
> However, is clustering the OS the only way to provide a high
> availability (active/active or active/standby) solution? For
> example, with Red Hat Cluster Suite. Here is a rough drawing of my
> logic:
> Client --- > FW ---> Squid ---> Load Balancer ---> Webservers
>
> They already have expensive load balancers in place so they aren't
> going anywhere. Thanks for any insight!
>

IIRC there has been some large-scale sites setup using CARP in grids
between squid sibling acelerators. The problem we have here is that few of
the large-scale sites share their configurations back to the community.

If you are doing any sort of scalable I'd suggest looking at the
ICP-multicast and CARP setup for bandwidth scaling.
Squid itself does not include any means of failover for connected clients
if an individual cache dies. That is up to the
FW/router/switch/loadbalancer between squid and clients. All squid can do
it restart itself quickly when something major occurs.

Amos
Received on Mon Dec 17 2007 - 18:01:14 MST