10.2. Ring

Ring is a project by Mark McGranaghan that aims to abstract away HTTP so that basic web services can be written in Clojure. It isn’t, and doesn’t aim to be, a full-featured web application framework. Instead, out-of-the-box, it implements only basic HTTP support, and by featuring a concise, modular design, it allows extensibility through the use of what are called middleware plug-ins.

The Ring project is hosted on GitHub, at http://github.com/mmcgrana/ring. There are instructions on the site about downloading and installing it onto your computer. For the remainder of this section, we’ll assume that you have it running (you have Ring’s src and lib directories on your JVM classpath).