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Introduction to the Boundary Layer

Explore the role of the boundary layer in Elixir OTP systems to isolate core business logic with processes. Understand how to manage state, handle errors, and communicate through APIs using OTP concepts like GenServer and supervisors.

Boundaries are the “B” for “big” in the sentence “Do fun things with big, loud worker-bees.” We’ve handled the first half of that sentence, as we built and tested the functional core that serves to isolate as much code as possible from processes. Remember, many projects will not need any layers beyond these three.

The rest of this course deals with “big, loud worker-bees,” the outer layers. These ...