On Mon, Mar 30, 2009 at 08:48:14AM +0800, Jeffrey 'jf' Lim wrote:
> On Mon, Mar 30, 2009 at 3:48 AM, Willy Tarreau <w...@1wt.eu> wrote:
> > On Sun, Mar 29, 2009 at 12:31:27PM -0700, John L. Singleton wrote:
> >> I'm a little mystified as to the usefulness of this as well. I mean,
> >> what does hashing the domain name solve that just balancing back to a
> >> bunch of Apache instances with virtual hosting turned on doesn't? Are
> >> you saying that you have domains like en.example.com, fr.example.com
> >> and you want them all to be sticky to the same backend server when
> >> they balance? If that's the case, I could see that being useful if the
> >> site in question were doing some sort of expensive per-user asset
> >> generation that was being cached on the server. Is this what you are
> >> talking about?
> >
> > There are proxies which can do prefetching, and in this case, it's
> > desirable that all requests for a same domain name pass through the
> > same cache.
> >
> 
> so are you saying haproxy -> cache -> backend? (in which case, you
> would be talking more about an ISP, i think? or does anybody here not
> running an ISP actually do this (I would be interested to know))

not necessarily, it can also be :
   customers -> haproxy -> caches -> world

Willy


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