Designing Hexagonal Architecture with Java is a seminal book by Davi Vieira (first published in early 2022) that provides a blueprint for creating maintainable, change-tolerant applications. It centers on the "Ports and Adapters" pattern, which isolates the core business logic from external technology concerns like databases and web frameworks. 1. Architectural Core: The Three Hexagons
: Implement outbound ports (e.g., a repository implementation using Spring Data JPA). Designing Hexagonal Architecture with Java Designing Hexagonal Architecture with Java is a seminal