2010-01-18 We run three small EC2 instances for content caching purposes at OneSpot. These systems are 32-bit machines with 1.7GB of RAM. Originally we figured even on a small system Varnish could flood a 100Mb line so we wouldn’t need a more expensive, large EC2 instance. This blog post explains why this turned out to be a poor choice. Executive summary: Varnish really, really wants to run on a 6

