The Hexagonal (Ports & Adapters) Paradigm

When To Use

• Isolating business logic from external dependencies
• Systems needing swappable adapters for testing

When NOT To Use

• Small scripts or utilities without external dependencies
• Prototypes where port/adapter abstraction adds overhead

When to Employ This Paradigm

• When you anticipate frequent changes to databases, frameworks, or user interfaces and need the core domain logic to remain stable.
• When testing the core application requires mocking complex or slow infrastructure components.
• When the development team needs to provide clear inbound and outbound interfaces for third-party integrations.