Java and Microservices: From Monolith to Cloud Architecture

Modern software development is unthinkable without microservice architecture. The book "Java and Microservices" is a comprehensive guide that will take you from the basics of a monolithic application to building a distributed, fault-tolerant, and scalable system in Java.

What is this book about?

The author, an experienced architect and developer Alexey Voronov, shares proven practices and real-world cases. You will learn:

• Fundamentals of microservice architecture: principles, advantages, challenges, and when microservices are truly needed.
• Service design: context boundaries, strategies for splitting a monolith, data and transaction management (Saga, CQRS, Event Sourcing).
• Java technology stack: deep dive into Spring Boot, Spring Cloud, Netflix OSS, Hibernate, and reactive frameworks.
• Inter-service communication: REST, gRPC, message queues (Kafka, RabbitMQ), asynchronous interaction, and error handling.
• Containerization and orchestration: creating Docker images, writing Docker Compose files, deploying in Kubernetes (K8s), autoscaling, and configuration management.
• Observability: logging (ELK), metrics (Prometheus, Grafana), tracing (Jaeger, Zipkin), and service health monitoring.
• CI/CD and DevOps: setting up pipelines (Jenkins, GitLab CI), automated testing, blue/green deployments, and canary releases.
• Security: JWT, OAuth2, API Gateway, protecting inter-service traffic.

Who is this book for?

• Java developers (Junior+, Middle, Senior) who want to transition from monolithic applications to microservices.
• Software architects looking for practical solutions for designing distributed systems.
• DevOps engineers wanting to understand the specifics of deploying Java applications in the cloud.
• IT students and graduates striving to acquire in-demand skills.

What will you learn and be able to do after reading?

• Design microservice boundaries based on domain-driven design (DDD).
• Develop RESTful and asynchronous APIs using Spring Boot and WebFlux.
• Configure Service Discovery, Circuit Breaker, and distributed configuration.
• Containerize applications and manage them in Kubernetes.
• Implement reliable continuous delivery pipelines.
• Debug and monitor distributed systems in production.

The book contains numerous code examples, diagrams, and step-by-step instructions. Each chapter concludes with practical exercises to reinforce the material. This is not theory — it is a ready-made set of tools for real work.

Start your journey to modern architecture today. "Java and Microservices" will be your reliable guide to the world of distributed systems.