Elixir Fundamentals

Elixir is a dynamic, functional language that runs on the Erlang virtual machine, usually called the BEAM. The BEAM gives Elixir a runtime model built around many isolated processes, message passing, and supervision. That model suits services that must keep handling work while individual tasks fail.

Keep the layers separate.

Elixir source becomes compiled code that runs on the BEAM. The BEAM runs inside an operating-system process. An Elixir process is a lightweight unit managed by the BEAM, not an operating-system process.

Values and immutable data