Elixir/Erlang/OTP has a lot of useful stuff to say about testing, deployment, reliability, maintenance, and code quality. Ruby does too, but is constrained in v

Elixir/Erlang/OTP has a lot of useful stuff to say about testing, deployment, reliability, maintenance, and code quality. Ruby does too, but is constrained in various ways. Honestly, websockets-as-first-class-citizen plus the E/E/O process model is a huge win, and one that Rails just won't have going for it. That doesn't make Rails obsolete, but it's outside of its comfort zone compared to the new/old tech.