Java API Development. Complete Guide

The book "API Development in Java" is a comprehensive practical guide for those who want to master creating modern web services and APIs in Java. The author, Alexey Voronov, a senior developer with 10 years of experience in enterprise projects, shares proven methodologies and industry best practices.

What is this book about?

The book covers the full API development lifecycle: from architecture design to deployment and monitoring. You will learn:

• How to design RESTful APIs considering HATEOAS principles and versioning
• Specifics of working with Spring Boot, Spring MVC, and Spring Data JPA
• Implementing GraphQL APIs using Netflix DGS and graphql-java
• Authentication and authorization methods: JWT, OAuth 2.0, OpenID Connect
• API testing with JUnit 5, Mockito, Postman, and integration tests
• Documentation via OpenAPI/Swagger and AsyncAPI
• Containerization with Docker and orchestration with Kubernetes
• Monitoring and logging with Prometheus, Grafana, and the ELK Stack

Who is this book for?

The material will be useful for:

• Junior developers who want to systematize their knowledge and learn to write production-grade APIs
• Middle developers looking to delve into advanced topics: reactive APIs, gRPC, event-driven architecture
• Team Leads and architects seeking best practices for designing scalable services
• Students and graduates preparing for Java position interviews

What will you learn after reading?

• Design APIs with performance and security in mind
• Use modern frameworks and tools from the Java ecosystem
• Write clean, testable, and maintainable code
• Set up CI/CD pipelines for automatic deployment
• Solve real business problems using microservice architecture

The book contains over 50 practical examples ready for use in real projects. All source code is available on GitHub. This is not just theory — you will create a full-fledged API gateway, a booking system, and a chat service in Java.

Format: PDF, EPUB, MOBI (adapted for reading on any device).

Level: from beginner to advanced.