Hi,
A couple of month ago I asked a question here regarding the best VARNISH architecture for a high traffic site. We then do some testing and we are still unsure of the best scenario, so I ask again with a little more information. We have a 40.000 concurrent users sites. This is handled by 5 boxes. On each box we have TOMCAT, APACHE and VARNISH using malloc. What we want to determine, is the impact on each server VARNISH makes, mostly at a 'connections' level and determine if is best to: a) growth adding same kind of servers (boxes with all 3 services) b) separete Varnish from the boxes and have, for example, 2 varnishes balacing with 4 backend servers On the b scenario, we can assign more memory to the TOMCAT and handle more load. The CACHE HIT RATE is not an issue, since all the boxes have a very high hitrate. Any advice on this matter will be appreciated. We are inclining now for the A option.
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