I’ve really enjoyed writing stuff in Elixir because a lot of the time you can do that whole “boot a tiny MVP out the door” thing and ignore scaling, but refactoring to a different more scalable architecture pattern is relatively simple or can be done nearly for free because of the Erlang VM. You don’t get stuck in the situation of having to rewrite in an entirely different framework because the one you chose to get up and running quickly doesn’t scale well.