GraphQL on Go (Golang): Building Modern APIs

This book is a comprehensive guide to building modern, flexible, and high-performance APIs using GraphQL and the Go language (Golang). If you are tired of REST endpoints and want to give clients the ability to request exactly the data they need, this book is for you.

The author systematically guides the reader from the basics of GraphQL to building a production-ready server. You will start with understanding the type system, queries, and mutations, and then move on to practical implementation in Go using popular libraries such as gqlgen and graphql-go.

What you will learn:

• Basics of GraphQL syntax and data schema design.
• Setting up and configuring a GraphQL server in Go.
• Creating resolvers to handle queries and mutations.
• Working with subscriptions for real-time updates.
• Integration with databases (PostgreSQL, MongoDB) and ORM.
• Authentication, authorization, and error handling.
• Performance optimization, batching, and caching.
• Testing and deploying a GraphQL server.

Who this book is for:

• Go developers looking to master a modern approach to building APIs.
• Backend engineers familiar with REST and seeking alternatives.
• Students and beginner programmers learning Go and GraphQL.

Each chapter contains practical code examples that can be immediately applied to your projects. You will learn not just to write code, but to design scalable and maintainable systems. The book is suitable for both beginners in GraphQL and experienced developers who want to deepen their knowledge of the Go + GraphQL combination.

After reading, you will be able to independently create APIs that are easily extensible, require no versioning, and give clients full control over the requested data. Code examples are available for download and are adapted for the latest versions of Go.