Building real backend systems can feel overwhelming when tutorials jump too quickly from “Hello World” to databases, security, microservices, messaging, containers, and cloud deployment. Spring Boot 4 Microservices Engineering gives you a clearer path.

Designed for Java developers who are new to Spring Boot, backend engineering, or microservices, this practical guide walks you through the process one manageable step at a time. You do not need previous experience with Spring Security, PostgreSQL, Kafka, Docker, Kubernetes, or distributed systems. Basic familiarity with Java is helpful, and every major Spring and backend concept is introduced progressively.

Instead of disconnected examples, you build one evolving commerce and fulfillment platform and gradually transform it into a secure, persistent, event-driven, observable, tested, and deployable distributed system.

Key Features

Step-by-step explanations that break complex backend concepts into manageable stages
Practical Java and Spring Boot 4 examples built around a real project
Production-focused REST API development, persistence, security, testing, and deployment
Hands-on coverage of PostgreSQL, JPA, Hibernate, OAuth2, JWT, gRPC, Kafka, Docker, Kubernetes, and observability
Practical exercises that reinforce each chapter
Clear explanations of common failures, troubleshooting, and why engineering decisions matter
A learning approach that treats mistakes as part of the process and builds confidence through small, working improvements

What You Will Learn

You will learn how to:

Build structured Spring Boot applications with clear architectural boundaries
Design, validate, document, and test production-ready REST APIs
Persist data safely with PostgreSQL, Spring Data JPA, Hibernate, and migrations
Secure APIs with Spring Security, OAuth2, OpenID Connect, JWT, roles, and permissions
Design and decompose microservices with clear service and data ownership
Communicate between services using HTTP, gRPC, and Apache Kafka
Handle retries, idempotency, eventual consistency, circuit breakers, and failure scenarios
Add structured logging, metrics, health checks, and distributed tracing
Test realistic infrastructure with integration and contract testing
Containerize services with Docker and deploy them with Kubernetes

Who This Book Is For

This book is ideal for Java developers, students, self-learners, and aspiring backend engineers who want to move beyond basic tutorials and understand how modern services are actually designed, secured, tested, observed, and deployed. It is especially suitable for readers new to Spring Boot or microservices who want a practical, confidence-building path toward production-ready backend development.

Table of Contents

Engineering Modern Applications with Spring Boot 4
Building Production-Grade REST APIs
Persistence and Transaction Management with PostgreSQL
Securing Spring Boot APIs and Services
Designing and Decomposing Microservices
Synchronous Communication Between Services
Event-Driven Microservices with Apache Kafka
Resilience and Observability in Distributed Systems
Testing Spring Boot Microservices
Docker, Kubernetes, and Production Readiness

If you are ready to stop following isolated tutorials and start building reliable Java backend systems with confidence, Spring Boot 4 Microservices Engineering gives you the practical roadmap. Start with the first service, build one capability at a time, and turn each small win into real backend engineering skill.

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Spring Boot 4 Microservices Engineering

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