Java API Development: From Basics to Microservices

The book "Java API Development" is a comprehensive practical guide for developers who want to master building modern web interfaces in Java. The author, Alexey Voronov, a senior developer with 10 years of experience, systematically takes the reader from the basic principles of API construction to deploying production solutions.

Who this book is for:

• Junior and Middle Java developers looking to transition to backend API development;
• Students and graduates of IT specialties studying Java;
• Developers from other languages (Python, C#) switching to Java;
• Tech leads wanting to systematize their knowledge of API design.

What you will learn:

• REST basics: resources, HTTP methods, statuses, HATEOAS;
• Setting up Spring Boot for a quick start on an API project;
• Working with JPA and Hibernate: entity mapping, repositories, pagination;
• Creating RESTful controllers with validation and error handling;
• Documenting APIs with Swagger/OpenAPI 3.0;
• Authentication and authorization: JWT, OAuth2, Spring Security;
• Developing GraphQL APIs using Spring GraphQL;
• Testing: unit, integration, with MockMvc and TestContainers;
• Microservice architecture: Service Discovery, API Gateway (Spring Cloud);
• Asynchronous communication: Kafka, RabbitMQ, WebSockets;
• Mo