Building Phoenix Applications with GraphQL

Modern web development demands efficient APIs that deliver exactly the data your clients need without over-fetching. By combining the high-performance Phoenix framework with GraphQL, you can build incredibly responsive, structured, and maintainable backends. This text-based course guides you through understanding how to drive Phoenix actions using GraphQL APIs. You will start with the fundamental concepts of Elixir, the Phoenix framework, and the core principles of GraphQL. From there, you will learn how to design schemas, write queries and mutations, and map them to your Elixir business logic. What you'll learn: - Understand the foundational architecture of Phoenix applications and how GraphQL fits into the request-response lifecycle. - Configure Absinthe to define clear, type-safe GraphQL schemas and resolvers in Elixir. - Build efficient queries and mutations to handle data retrieval and state modification. - Implement modern database patterns using Ecto to prevent common performance issues like N+1 queries. - Design robust error handling and validation mechanisms for client-facing API responses. Through clear written explanations, structured code walkthroughs, and conceptual checkpoints, you will progress from basic setup to handling complex data relationships. This course is designed for backend developers, Elixir enthusiasts, and web engineers looking to expand their API design skills. No prior experience with GraphQL is required, though a basic familiarity with web development concepts will help you get the most out of the material. Dive in and start building modern Phoenix APIs today.