Category: Varnish

Scale Out For SharkTank

Recently one of our clients was featured on SharkTank, the critically-acclaimed business-themed show, featuring the Sharks and their continuing the search to invest in the best businesses and products that America has to offer. Fohawx is a line of cool accessories that can easily attach to any kind of safety helmet – instantly transforming annoying headgear into a fashion statement. The appearance on SharkTank was a great opportunity for Fohawx to showcase their product. Based on past experience we know that their web site could get 5000 or more simultaneous users. The small RackSpace Cloud Server on which they were hosted would be vaporized by this traffic. Due to the proprietary nature of their application server (ColdFusion) we could not add additional web servers. So a couple of days before the event we outlined measures to temporarily scale out their hosting capacity: 1. Re-sized the web server to 16GB of RAM. We

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Insert Varnish Cache With NAT Rule

Here’s a simple nat rule for iptables that will route incoming web traffic to your varnish cache. This allows you to implement varnish without reconfiguring apache. In the varnish config, set the backing do be 127.0.0.1:80.

Here’s a different rule that also seems to work:

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