Building GraphQL Mutations in Elixir with Absinthe

Modern web applications require fast, reliable, and type-safe APIs to manage complex data workflows. If you want to build scalable backends, combining the concurrent power of Elixir with the flexible query language of GraphQL is one of the most robust architectural decisions you can make. This text-based course guides you step-by-step through designing and implementing transactional APIs using Elixir and Absinthe. You will start by mastering foundational concepts, including GraphQL schemas, types, and the mechanics of mutations. From there, you will progress to handling inputs, managing database interactions, and adopting modern API practices like structured error handling and validation. What you'll learn: - Understand the core principles of GraphQL mutations and how they modify state in Elixir applications - Design structured GraphQL schemas and input types using the Absinthe DSL - Write efficient resolver functions to process incoming mutation payloads and interact with database layers - Apply robust validation patterns to handle bad inputs and return clean, readable error messages - Test your mutations interactively and write automated test suites to ensure API reliability - Implement modern API best practices, including secure input handling and type hints This course is structured as a logical progression, beginning with essential terminology and schema design before moving into practical resolver logic, input validation, and testing. It is perfect for developers who are new to GraphQL in Elixir or looking to solidify their understanding of the Absinthe ecosystem. No prior GraphQL experience is required, though a basic familiarity with Elixir syntax will help you get the most out of the material. Start building reliable, type-safe APIs today.