GraphQL in C++: A Complete Guide to Building Modern APIs

The book "GraphQL in C++" is the first practical guide of its kind dedicated to building high-performance GraphQL servers in the C++ language. Unlike typical guides focused on JavaScript or Python, this book fills an important gap by offering C++ developers modern tools and techniques for building efficient APIs.

What is this book about?

The book covers the full development cycle of a GraphQL server in C++ — from the basics of graph theory and schema design to production deployment. You will learn:

• How the GraphQL protocol works and how it differs from REST
• Principles of building a type system and query schema (Schema Definition Language)
• How to use the graphql-cpp and Crow libraries to build the server side
• Query optimization: the N+1 problem, DataLoader, batching, and caching
• Integration with databases (SQLite, PostgreSQL) and Redis
• Authentication, authorization, and protection against injections
• Testing GraphQL endpoints and load testing
• Deployment via Docker and CI/CD pipelines

Who is this book for?

The book is intended for C++ developers who want to master a modern approach to building APIs. It will be useful for:

• Backend developers working with high-load systems
• Engineers transitioning from REST to GraphQL
• Students and teachers studying modern data exchange protocols
• Developers of game servers and IoT solutions where performance is critical

What will you learn?

After reading the book, you will be able to:

• Design flexible and scalable GraphQL schemas
• Implement resolvers with minimal overhead
• Integrate C++ code with web servers and databases
• Optimize performance under high loads
• Build reliable and secure APIs for microservice architecture

The book contains numerous practical examples, ready-to-use code snippets, and step-by-step instructions. All examples are accompanied by comments and explanations, making the material accessible even for those just starting to learn GraphQL.

GraphQL in C++ is not just a reference book, but a full-fledged practical guide that will help you reach a new level in developing high-performance APIs. Whether you are building a web service, a game backend, or a real-time system — this book will be your reliable guide to the world of GraphQL in C++.