If you just handle the client side part, you don't really need to learn any of it. If you do need to get into the server-side, Elixir/Phoenix seems like a great

If you just handle the client side part, you don't really need to learn any of it. If you do need to get into the server-side, Elixir/Phoenix seems like a great fit if you are doing real-time/concurrent stuff (websockets are dirt-simple). If you just need a persistent storage backend, RoR or Django will get you up and running quickly, and both are adding their own websocket support as well.