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About the Book

Looking for a Spring Boot API book that goes beyond boilerplate code? Spring Boot API: Insurance Quote Application is a hands‑on guide for developers who want to build real, production‑ready applications. Whether you’re new to Spring Boot or refining your Agile skills, this book walks you through the full development lifecycle—from user stories and Gherkin scenarios to Test‑Driven Development, layered architecture, microservices integration, and API testing with Postman, Swagger, and mocking frameworks.

Software architecture isn’t just about layers, endpoints, and data flow—it’s about people. Behind every controller is a user story. Behind every test case is a team striving to build with confidence. This book invites you to see Spring Boot development not just as a technical craft, but as a human one. Through clear diagrams, real‑world APIs, and thoroughly commented code, you’ll explore how thoughtful design can shape better software.

Inside, you will build three APIs in the form of microservices that power a dynamic insurance platform. You’ll explore:

• Agile development with real‑life scenarios
• Test‑Driven Development using JUnit
• Testing with Mockito
• Spring Boot layering: controllers, services, repositories, DTOs, and exceptions
• JPA with H2 database, validation, and response entities
• Pagination and dynamic search endpoints for user‑facing data
• Deployment on a Tomcat server with practical configuration tips

With consistent terminology and clearly explained code examples, this book helps you connect the dots between backend architecture and real‑world impact. Each technical decision—every layer, test, and naming convention—isn’t just about code quality, it’s about making life easier for:

• The developer who inherits your code
• The learner trying to understand the flow
• The user who relies on the application to solve a real problem

Take your Spring Boot skills to the next level and build APIs that truly work—with clarity, confidence, and purpose.

About the Author

Gerry Byrne

Gerry Byrne is a Senior Technical Trainer at a Forbes 100 company, where he specializes in upskilling software engineers who build business critical applications. With a long career as a teacher, lecturer, and corporate trainer, Gerry brings a rare blend of academic rigor and real-world insight to his instruction.

 

He has delivered technical training across a wide spectrum of languages and frameworks, including Java, Spring, C#, Python, and JavaScript. His expertise in Spring Boot and API development is grounded in years of hands-on experience teaching modern enterprise technologies to engineers at all stages of their careers, from new graduates to those re-entering the workforce, to seasoned professionals.

 

Gerry’s approach to training emphasizes clarity, practical application, and a deep understanding of how software development fits into commercial environments. Whether introducing Test-Driven Development or guiding teams through the intricacies of RESTful API design, he equips learners with the tools they need to thrive in today’s fast-paced tech landscape.