When a web application has a requirement for real time bidirectional communication, websockets are the natural choice. But what tools should be used to build a websocket server? Performance is important, but so is the development process. A performance benchmark alone is not enough. We also need to consider the ease of development. This shootout compares a simple websocket server implemented idiomatically in Clojure, C++, Elixir, Go, NodeJS, and Ruby.
