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Building Production-Ready Applications with Spring Boot 4: A Hands-On Guide to Building Secure, Scalable Java Applications
Paperback
Series: Building with Spring Boot 4, Book 2
Publisher: Independently Published
Published: Sep 10 2026
Pages: 304
Weight: 1.56
Height: 0.64 Width: 8.50 Depth: 11.00
Language: English
Can you build a Spring Boot application that works locally-but are you unsure whether it is secure, reliable, testable, or ready for production?
Do your REST APIs work, but become difficult to validate, secure, test, monitor, and maintain as the application grows? Have you learned Spring Boot through isolated tutorials, yet still struggle to understand how authentication, databases, transactions, testing, Docker, and deployment fit together?
Building Production-Ready Applications with Spring Boot 4 is designed to bridge that gap.
Using Java 21 and Spring Boot 4, this hands-on guide takes you beyond annotations and tutorial-sized applications toward the engineering discipline required to build systems that can be trusted in real-world environments.
You will learn how to build applications with clear architectural boundaries, design reliable REST APIs, validate requests, return consistent errors, work effectively with Spring Data JPA, manage transactions and data consistency, and optimize database access.
You will implement Spring Security with JWT authentication and layered authorization, integrate external services with timeouts and resilient retry strategies, and build meaningful automated tests using unit testing, Spring test slices, integration testing, and Testcontainers.
You will also learn to diagnose startup and runtime failures, instrument applications with structured logging, metrics, health checks, and distributed tracing, prepare applications for production, create secure Docker images, automate delivery with CI/CD, measure performance, design reliable asynchronous workflows, and understand practical microservices architecture.
But the real focus goes deeper than knowing which annotation to use.
What happens when two users modify the same data at the same time?
What happens when a database connection pool is exhausted or an external API becomes slow?
What happens when authentication succeeds but authorization must fail?
What happens when a deployment introduces a schema incompatibility?
How do you diagnose a production failure when all you initially have is an error and a request identifier?
These are the questions that separate functional applications from production-ready systems.
You will progress:
From writing controllers to designing API boundaries.
From using repositories to understanding persistence and transaction consistency.
From adding authentication to designing layered authorization.
From writing tests that pass to building a dependable testing strategy.
From works on my machine to reproducible, containerized deployments.
From reacting to failures to designing for observability and operational health.
From copying Spring patterns to making deliberate engineering decisions.
The book connects the complete engineering chain:
API design → validation → security → business logic → transactions → persistence → external dependencies → testing → observability → deployment → operations → evolution.
Whether you are moving from Java into Spring Boot, a junior developer dealing with growing applications, or an intermediate developer ready for stronger production engineering skills, this book helps you develop both implementation ability and the judgment to understand why a solution works, when to use it, what can fail, and how to design around real constraints.
Start with a Spring Boot application. Structure it. Secure it. Persist data safely. Test it. Diagnose it. Observe it. Containerize it. Deliver it. Optimize it. Scale it. Evolve it.
Stop building applications that only work in development. Start building Spring Boot systems designed to work r
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