GraphQL Interfaces for Flexible APIs with Elixir and Absinthe

Designing modern APIs requires a balance between strict schema design and flexible data structures. If you are building APIs in Elixir and want to handle diverse data models without cluttering your code, mastering abstract types is the key. This course guides you through the foundational concepts of GraphQL interfaces, showing you how to build clean, maintainable schemas that scale with your application needs. You will transition from writing repetitive schemas to designing elegant, polymorphic APIs. By understanding how to share fields across different object types, you will write cleaner code and enable clients to query complex data structures with confidence. What you'll learn: - Understand the core concepts of GraphQL abstract types and when to choose interfaces over unions - Configure Absinthe schemas in Elixir to implement robust interface types with shared fields - Resolve concrete types dynamically using custom type resolvers in Absinthe - Apply modern schema design patterns to ensure API flexibility and client-side usability - Practice writing clean queries and fragments that leverage polymorphic fields - Debug and test interface-driven queries to maintain API reliability Starting with foundational definitions of abstract types, you will progress through practical schema design, type resolution strategies, and real-world implementation patterns in Elixir. This written course is designed for beginner backend developers and Elixir enthusiasts who have a basic understanding of APIs but are new to GraphQL interfaces. No advanced Absinthe experience is required to get started. Step into the world of flexible schema design and elevate your API development skills today.