Java and Microservices: Architecture, Development, and Deployment

The book "Java and Microservices" is a comprehensive practical guide for developers seeking to master the modern approach to building distributed systems. Unlike many publications that are limited to theory, this book offers step-by-step instructions, code examples, and ready-made design patterns that can be immediately applied in real projects.

The book covers all key aspects of microservice architecture:

• Microservices Fundamentals: principles, advantages, and challenges, comparison with monolithic architecture.
• Design: service boundaries, decomposition strategies, API Gateway, Service Discovery, Circuit Breaker patterns.
• Development in Java: creating microservices using Spring Boot, configuring REST API, working with databases (JPA, NoSQL).
• Communication: synchronous interaction (REST, gRPC) and asynchronous (RabbitMQ, Apache Kafka).
• Containerization: packaging microservices into Docker images, writing Dockerfile and docker-compose.yml.
• Orchestration: deploying in Kubernetes, configuring pods, services, deployments, and config maps.
• Monitoring and Logging: collecting metrics (Prometheus, Grafana), centralized logging (ELK Stack), distributed tracing (Jaeger).
• Security: authentication and authorization (OAuth2, JWT), API protection, secrets management.

The book is intended for Java developers from Junior to Middle level who are already familiar with the basics of the language and want to move on to creating complex distributed systems. It will be useful for system architects, DevOps engineers, and anyone who wants to understand how to build reliable, scalable, and easily maintainable services.

After reading, you will be able to:

• Independently design and implement a microservice architecture in Java.
• Configure containerization and orchestration using Docker and Kubernetes.
• Integrate monitoring, logging, and tracing into your projects.
• Ensure secure communication between services.
• Avoid common mistakes when transitioning from a monolith to microservices.

The book contains many practical examples, ready-to-use code snippets, and links to additional resources. All examples are tested on current versions of Java 17+, Spring Boot 3.x, and Kubernetes 1.28+.

"Java and Microservices" is not just a textbook, but a desktop reference for every developer working with distributed systems. Whether you are creating a new project from scratch or migrating an existing monolith, this guide will help you avoid pitfalls and build a truly modern application.