"Let it crash" in Erlang/Elixir means that the process that serves the request is allowed to crash. It then will be restarted by the supervisor. Supervisors th

"Let it crash" in Erlang/Elixir means that the process that serves the request is allowed to crash. It then will be restarted by the supervisor. Supervisors themselves form a tree, so for a crash to take down the whole app, it needs to propagate all the way to the top. Another explanation for people familiar with exceptions in other languages: "Don't try to catch the exception inside a request handler".