소개
This skill empowers developers to build robust, scalable backend services using Spring Boot 3.5+ by enforcing clean separation of concerns through domain, application, and infrastructure layers. It facilitates the creation of RESTful APIs, JPA-backed repositories, and immutable DTO records while ensuring best practices like constructor injection, request validation, and comprehensive testing with Testcontainers. Whether scaffolding new features or auditing existing service layers, this skill ensures architectural consistency and modern Java standards.