Rails 5.0 has several very important and new features, including Action Cable, a new framework that handles WebSockets in Rails. Action Cable is an integrated solution for managing connections, with two layers: one for server-side processing, and a JavaScript layer for client-side interaction. Rails is useful for the new crop of client-side JavaScript or native applications that need the back end to speak JSON to which developers can now see this in the new API mode. Read the full details.