Last month, 37Signals introduced Thruster, a “zero-config” gem that makes your web pages load faster by solving various problems that would otherwise require changes in multiple places in your infrastructure. This post explains what those problems are, how Thruster solves them, and why you might want to use it even if you have a CDN like Cloudflare in front of your app, which already implements all the features that Thruster offers. 1. Puma is a great application server, but a poor web server B...