<div dir="ltr"><div><div dir="ltr"><div><div>Hi,<p></p><p></p></div><div><br></div><div>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.</div>
<div><br></div><div>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. </div><div><br></div><div>What we want to determine, is the impact on each server VARNISH makes, mostly at a 'connections' level and determine if is best to:</div>
<div><br></div><div>a) growth adding same kind of servers (boxes with all 3 services)</div><div>b) separete Varnish from the boxes and have, for example, 2 varnishes balacing with 4 backend servers</div><div><br></div><div>
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.</div><div><br></div><div>Any advice on this matter will be appreciated. We are inclining now for the A option.</div>
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