Secure GraphQL APIs in Elixir with Middleware Authorization

Building robust APIs requires more than just fetching and saving data; you must ensure that users can only access what they are authorized to see. This text-based course guides you through the process of securing Elixir-based GraphQL APIs using clean, modular, and reusable middleware. By shifting authorization out of your individual resolvers and into dedicated middleware layers, you will write cleaner, more maintainable code that scales beautifully as your application grows. Starting with foundational web security concepts and Elixir-specific architectural patterns, you will learn how to design robust access control rules. You will explore token-based authentication, context building, and role-based permissions tailored specifically for modern Absinthe GraphQL schemas. Through detailed written explanations and clear code examples, you will master the art of decoupling authorization logic from your business domain. What you'll learn: Understand core security and authorization concepts within Elixir and GraphQL architectures; Configure Absinthe context to securely extract and pass user credentials; Build reusable middleware modules to intercept queries and mutations; Implement role-based and attribute-based access control rules; Clean up and simplify your resolver functions by offloading security checks; Refactor existing API endpoints to use modern, maintainable authorization patterns. This course is designed for backend developers, Elixir enthusiasts, and API designers who want to build secure, production-ready GraphQL services. No prior experience with middleware is required, though a basic understanding of Elixir syntax and GraphQL schemas will help you get the most out of the material. Start reading today to elevate your API security standards.