2010/1/15 Rob S <rtshils...@gmail.com> > John Norman wrote: > > Folks, > > > > A couple more questions: > > > > (1) Are they any good strategies for splitting load across Varnish > > front-ends? Or is the common practice to have just one Varnish server? > > > > (2) How do people avoid single-point-of-failure for Varnish? Do people > > run Varnish on two servers, amassing similar local caches, but put > > something in front of the two Varnishes? Or round-robin-DNS? > > > We're running with two instances and round-robin DNS. The varnish > servers are massively underused, and splitting the traffic also means we > get half the hit rate. But it avoids the SPOF. > > Is anyone running LVS or similar in front of Varnish and can share their > experience? >
We run two varnish servers behind a netscaler load balancer to eliminate SPOF. Works fine, as the previous poster mentions you lower your hit rate - but not as much as I expected. As far as load is concerned, we could easily use just one server and it would probably still be 99% idle.
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