Hexagonal architecture + PON: Ports & Adapters to decouple the engine
Part 4 of 12 — Behaviours as outbound ports, adapters for I/O, how rules stay testable, and a production-shaped config pattern around the tec0301_pon PoC.

Source: DEV Community
Part 4 of 12 — Behaviours as outbound ports, adapters for I/O, how rules stay testable, and a production-shaped config pattern around the tec0301_pon PoC.