When L4 is used, does squid need to validate the http traffic, like virus, BT or other "abnormal" traffic?
So, does it cause squid unstable or high utilization ?
--- On Wed, 7/16/08, Henrik Nordstrom <henrik@xxxxxxxxxxxxxxxxxxx> wrote:
> From: Henrik Nordstrom <henrik@xxxxxxxxxxxxxxxxxxx>
> Subject: Re: L4/L7 switch for caching
> To: "Pablo García" <malevo@xxxxxxxxx>
> Cc: "Ryan Raymond" <rray1080@xxxxxxxxx>, squid-users@xxxxxxxxxxxxxxx
> Date: Wednesday, July 16, 2008, 5:19 AM
> tis 2008-07-15 klockan 23:46 -0300 skrev Pablo García:
> > You want to balance your squid cache farm, using a
> URLHASH algorithm,
> > to increase the hit ratio, that would be L7.
>
> Assuiming you do transparent interception like everyone
> else then for
> most setups, large as small, it's quite sufficient to
> balance based on
> destination IP. But it's good if the load balancer has
> built-in HTTP
> checks, proper monitoring each server for availability.
>
> On the other hand, if your network (router/switch) supports
> WCCP then no
> additional load balancer is needed as the load balancing
> you need is
> already in the network equipment and almost
> auto-configured..
>
> If you are doing explicit configuratoin (manaul or auto
> discovered) then
> L7 is needed for load balancing if you want decent hit
> ratio, at least
> until intra-array CARP routing gets implemented...
>
> Regards
> Henrik
