Processing Power

Tue Jan 28 13:28:43 CET 2014

>From a load balanced perspective, we have an f5 in front, and varnish is running on the same server as our web server, apache. So the web server is setup with varnish on the front end and apache right behind it, same machine. We then duplicated that web to give us our load balanced setup. Load testing blew out the water when we put varnish in front of it compared to just apache. From a scale standpoint you could look at adding components along the way and seeing where it breaks down instead of scaling out immediately.

~Jason Ledford
www.biltmore.com

-----Original Message-----
From: Simon [simon.lennon at oncommerce.co.uk]
Received: Tuesday, 28 Jan 2014, 5:49AM
To: varnish-misc at varnish-cache.org [varnish-misc at varnish-cache.org]
Subject: Re: Processing Power

Thanks for the feedback on the processing power that was really helpful, has anyone combined varnish with nginx and used it as a load balancer / caching box. Does the performance requirements change much with nginx sitting in front of varnish?

thanks,
--

Simon Lennon
Technical Director

OnCommerce Ltd.
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Simon Lennon, OnCommerce Ltd.<mailto:simon.lennon at oncommerce.co.uk>
27 January 2014 11:45
Hi guys, I was wondering what kind of processing power varnish needs. I am setting up a dedicated environment with a custom built VCL which includes some regexp and the load balancing functionality.

I was going to setup a dual core server with 96GB of ram, is this enough for a HIGH traffic site, says 10,000 hits a second with very high cache utilization?

I will also be using the ban list to achieve a very high level of caching, with a daily restart to flush the archive, but I would expect several hundred regex patterns per day in the ban list.

I know varnish is optimized for performance so I wasn't sure how much processing power it would need,

thanks,
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