Kamil Mazurek

This article describes the implementation of a Java-based microservice that follows the principles of Hexagonal Architecture (also known as Ports and Adapters) and can serve as a reusable template. It provides a solid foundation for building maintainable and scalable microservices.

Built with Spring Boot, the microservice offers a REST API with a clean, modular structure designed to quickly bootstrap scalable and testable services. It separates core business logic from infrastructure concerns, making the codebase easier to maintain and extend over time. Key advantages include developer productivity, separation of concerns, scalability, flexibility, and ease of testing.

This article presents a Java-based microservice template built with Spring Boot that follows a modern REST-based Layered Architecture pattern. It offers a practical start for developers seeking a clean, modular codebase that follows best practices in structure, readability, and maintainability.

It provides a simple structure with clearly defined layers such as controller, service, and repository, making it easy to understand, extend, and maintain. The template exposes a REST API and offers a modular, clean foundation suitable for a wide range of applications, especially those with moderate business logic. Key advantages include simplicity, separation of concerns, maintainability, testability, and practical scalability.

This article presents a Java microservice template built with Spring Boot and Apache Kafka, following Event-Driven Architecture (EDA) principles. It provides a clean foundation for building scalable and resilient distributed systems that communicate through events instead of direct service calls.

The template is designed with a modular structure, separating domain logic, messaging infrastructure, configuration, and integration boundaries to ensure a clear architectural separation between components. This makes it a reusable starting point for modern microservice ecosystems. The structure is designed to be easily extended with additional services, topics, or event flows as your system grows.