Usually, when people discuss about the development of a WebSocket application, the WebSocket tier generally goes with Node.js and Socket.io. This combination is not bad at first but the maintenance can become DevOps' nightmare. As Node.js is still considered unstable, every major so-called "stable" release may possibly introduce backward compatibility busters which cause tear and grief to any teams of developments and operations. "WebSocket 101 in Python" will walk you through an example on how to develop a WebSocket application solely with Tornado Framework and RabbitMQ.