On Sat, Jan 16, 2010 at 1:54 AM, Bendik Heltne <bhel...@gmail.com> wrote:

> I must say that i am a bit confused.
> I don't understand the need of routing requests to different varnish
> servers based on hash algorithm. So I am wondering what kind of sites
> are we talking about?
>

We're talking about sites that have a hot working set much larger than the
amount of RAM you can fit in a single Varnish instance (i.e., 32-64GB).

Our Varnish servers have ~ 120.000 - 150.000 objects cached in ~ 4GB
> memory and the backends have a much easier life than before Varnish.
> We are about to upgrade RAM on the Varnish boxes, and eventually we
> can switch to disk cache if needed.


If you receive more than 100 requests/sec per Varnish instance and you use a
disk cache, you will die.

--Michael
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