Process Isolation in Elixir: Building Boundaries with GenServer

Building resilient systems requires a deep understanding of how to isolate state and manage concurrent processes. Without clear boundaries, your Elixir applications can become difficult to maintain and prone to cascading failures. This text-based course guides you through the core concepts of OTP, teaching you how to wrap process machinery behind clean API layers. You will learn to control state, manage process lifecycles, and handle errors gracefully, transforming the way you structure concurrent Elixir code. What you'll learn: Understand the foundational concepts of processes, state, and concurrency in Elixir OTP; Implement GenServer processes to manage state isolation and handle asynchronous communication safely; Design robust API boundaries that hide process implementation details from the rest of your application; Apply modern error-handling and supervision strategies to ensure system fault tolerance; Validate incoming data and manage state transitions cleanly within your process boundaries. The course begins with fundamental definitions of process-oriented design before moving into step-by-step written guides on GenServer implementation, API layer construction, and modern supervision patterns. This course is designed for beginner-to-intermediate Elixir developers who want to transition from basic syntax to writing reliable, production-ready OTP applications. Start reading today to master process isolation and build more resilient Elixir systems.