Phoenix Framework

Phoenix is a high-performance, productive web development framework written in Elixir. It runs on the Erlang VM (BEAM). It is designed to support both traditional request/response web applications. It also supports real-time, soft-real-time applications via WebSockets, channels, PubSub, and presence features. Phoenix emphasizes fault tolerance, scalability, and developer productivity. It provides tools like code generators, LiveView integration, templating, routing, and a flexible plug pipeline. Phoenix runs on the Erlang VM with the ability to handle millions of WebSocket connections alongside Elixir's tooling for building robust systems. Know who is connected right now, across one or dozens of nodes, by using our built-in Presence. No dependency required.