Spring Boot 4 Cloud-Native Engineering: A Practical, Project-Based Approach to Java Microservices, Spring Security, REST APIs, Docker, Kubernetes, and Observability

Building a Spring Boot application is one thing. Building one that is secure, reliable, observable, scalable, and ready for production is where many developers start to feel overwhelmed.

Spring Boot 4 Cloud-Native Engineering is designed to make that transition clear and manageable. You do not need prior experience with Spring Boot, microservices, Docker, Kubernetes, distributed tracing, or cloud-native architecture. A basic working knowledge of Java is helpful, and every major concept is introduced progressively through practical, project-based examples.

Instead of overwhelming you with isolated features or unexplained configuration, this book shows how the pieces of a modern Java backend fit together. You will progressively build an order-processing system while learning how production-ready APIs, databases, security, resilience, distributed communication, testing, observability, performance, and deployment work as one complete engineering system.

Mistakes, failed tests, configuration problems, and debugging sessions are treated as normal parts of learning. Each working endpoint, secured resource, successful test, trace, container, and deployment becomes another practical step toward confidence.

Key Features

• Practical, project-based Spring Boot 4 development

• Production-focused REST API design and HTTP contracts

• PostgreSQL, Spring Data JPA, Flyway, transactions, and performance

• Spring Security with OAuth 2.0, JWT, authorization, and resource ownership

• Timeouts, retries, circuit breakers, caching, and idempotency

• Microservices, Kafka, event-driven architecture, sagas, and eventual consistency

• Testing with Spring Boot, PostgreSQL, Testcontainers, security, and contracts

• Actuator, Micrometer, Prometheus, OpenTelemetry, logs, metrics, and tracing

• JVM performance, virtual threads, concurrency, and horizontal scaling

• Docker, Kubernetes, CI/CD, autoscaling, graceful shutdown, and rollback

What You Will Learn

You will learn how to structure maintainable Spring Boot applications, build stable REST APIs, persist data safely, secure backend services, design resilient distributed workflows, test real production behavior, diagnose failures using observability, improve application performance, package services as containers, and deploy them confidently to Kubernetes.

Who This Book Is For

This book is ideal for Java developers, students, self-learners, and backend developers who understand basic Java but are new to Spring Boot 4 or production cloud-native engineering. It is especially useful if you can build an application locally but want to understand how professional backend systems are secured, tested, monitored, scaled, and deployed.

Table of Contents

1. Engineering Spring Boot 4 Applications

2. Designing Production REST APIs

3. Persistence with PostgreSQL and Spring Data JPA

4. Securing Spring Boot Applications

5. Building Reliable and Resilient Services

6. Microservices and Distributed Communication

7. Testing and Quality Engineering

8. Observability and Production Diagnostics

9. Performance, Concurrency, and Scalability

10. Docker, Kubernetes, and Production Delivery

Move beyond simply making Spring Boot work. Start building Java backend systems you can understand, secure, test, observe, scale, and deploy with confidence.