Hands-On Microservices with Kotlin

Building a microservice is more than splitting an application into smaller parts. It means making deliberate choices about service boundaries, communication, resilience, data, and deployment. Juan Antonio Medina Iglesias’s Hands-On Microservices with Kotlin brings those architectural questions into working examples with Kotlin, Spring Framework 5, and Spring Boot 2.0.

Start with the architecture, not just the code

The book first establishes what distinguishes microservices from service-oriented architecture and monolithic applications. It then explores design principles such as loose coupling, independent deployment, isolation, and building for failure. Domain-Driven Design provides a framework for thinking about business capabilities, bounded contexts, and the language teams use to shape services.

Build services with Kotlin and Spring

Practical chapters take readers from setting up a Spring Boot application to creating RESTful services. The material also introduces Spring WebFlux and reactive programming, showing how non-blocking approaches fit into microservice development. Later, Spring Data and MongoDB bring reactive data access into the picture.

Follow the path toward cloud-native systems

Service discovery, configuration, gateways, monitoring, and deployment extend the discussion beyond an individual service. The book covers Spring Cloud, Docker, scaling with Docker Swarm, and deploying to OpenShift Online. Along the way, testing and Kotlin language idioms help connect implementation choices with maintainable application structure.

For Kotlin developers working with distributed systems

This guide is intended for Kotlin developers with some familiarity with microservice architecture who want to put the ideas into practice. Its strength is the progression from architectural principles to service implementation and operations: useful context for readers who want to understand not only how to create a service, but how it fits into a larger system.

Hands-On Microservices with Kotlin offers a focused look at the Kotlin and Spring ecosystem as it stood with Spring Boot 2.0, combining architectural foundations with concrete development and deployment topics.