Structuring Elixir Applications with Ecto Contexts

Building scalable applications requires a clean separation of concerns, yet many developers struggle with where to place business logic as their codebase grows. This text-only course guides you through organizing your Elixir applications using Ecto contexts to create robust, modular, and highly maintainable software. You will learn to establish clear boundaries within your system, ensuring your database interactions and domain logic remain clean and easy to test. By working through this comprehensive guide, you will transition from writing monolithic code to architecting elegant, decoupled Elixir systems. You will master the art of separating pure functional code from side-effect-heavy database operations, a core tenet of modern Elixir design. What you'll learn: - Understand the foundational concepts of Ecto contexts and domain-driven design in Elixir - Design clean boundaries to isolate database schemas from public application APIs - Separate pure business logic from impure database queries and mutations - Implement modern data validation patterns using Ecto changesets - Structure query modules to build reusable, composable database queries - Apply testing strategies to verify contexts in isolation without database pollution This course begins with fundamental architectural definitions and core Elixir design patterns before moving into practical context modeling. You will read through step-by-step structural explanations, inspect clear code examples, and practice your design skills through focused written exercises. This course is designed for beginner to intermediate Elixir developers who understand basic language syntax and want to learn professional application architecture. No prior experience with advanced software design patterns is required. Start reading today to build cleaner, more maintainable Elixir applications with Ecto.