707-technologies-hexagonal-architecture

Verify hexagonal architecture boundaries in a Java project by applying ArchUnit-style rules to validate dependency direction and prevent infrastructure leakage, ensuring your domain core remains independent and maintainable.

Dependency direction in hexagonal architecture dictates that dependencies must always point inward toward the domain core, preventing infrastructure leakage and keeping business logic independent from external frameworks or technologies.

Review a Java codebase for infrastructure leakage by scanning for dependencies that violate the inward-facing boundary rules of hexagonal architecture, using automated checks to identify and remediate unwanted coupling in the domain core.

You can use ArchUnit rules to automatically enforce hexagonal architecture principles by defining tests that validate dependency direction and boundary constraints, ensuring continuous compliance and reducing technical debt in Java projects.

You should avoid hexagonal architecture for small Java applications where the overhead of strict boundary management and dependency direction validation outweighs the maintainability benefits, as it may introduce unnecessary complexity.