SPRING BOOT 4 PRODUCTION SYSTEMS: Build Secure Java APIs and Microservices
Presley, Trent B.
Synopsis "SPRING BOOT 4 PRODUCTION SYSTEMS: Build Secure Java APIs and Microservices"
A Spring Boot API that runs on your laptop is only the beginning. Production systems must protect data, preserve transaction integrity, handle duplicate messages, contain dependency failures, and stay diagnosable during releases and incidents. Spring Boot 4 Production Systems is a practical guide to building secure Java APIs and microservices with a production-first mindset. Using FulfillOps—an order-and-fulfillment platform—you’ll progress from a well-structured modular application to a small distributed system, introducing independent services only when their operational value justifies the cost. Inside, you’ll learn how to: Design REST APIs with validation, consistent errors, pagination, idempotency, and OpenAPI contracts. Build reliable PostgreSQL persistence with JPA, Flyway migrations, transactions, and concurrency controls. Secure services with Spring Security, JWT, OAuth 2.0, OpenID Connect, and resource-level authorization. Design dependable Kafka workflows using retries, dead-letter handling, transactional outbox, idempotent consumers, and sagas. Contain failures with timeouts, circuit-breaker patterns, rate limits, bulkheads, caching, and graceful degradation. Verify real boundaries with JUnit, Spring integration tests, Testcontainers, security tests, and API contracts. Make production behavior visible through Actuator, Micrometer, structured logging, and OpenTelemetry. Deploy and operate with Docker, Kubernetes, CI/CD, safe database migrations, release verification, and rollback. Built for Java developers who already know Spring fundamentals, this book connects implementation choices to failure modes, verification steps, and operational consequences. Concise examples, practice labs, diagrams, production checklists, and troubleshooting guidance help you understand not only what to build, but how to reason about it under real production conditions. Build services that are secure, testable, observable, and more resilient when real production conditions put them under pressure.
