Hexagonal Architecture (Ports & Adapters)

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Architects maintainable, testable software systems by decoupling core business logic from external frameworks and infrastructure.

Hexagonal Architecture (also known as Ports and Adapters) is a design pattern that isolates core business logic from infrastructure, transport, and persistence details. This skill provides expert guidance for implementing clear domain boundaries, dependency inversion, and testable use-case orchestration across TypeScript, Java, Kotlin, and Go. By following these patterns, developers can build future-proof services where frameworks can be swapped, databases replaced, and multiple interfaces supported without rewriting central business rules. It includes a specific migration playbook for refactoring legacy systems and detailed testing strategies for every architectural boundary.

Key Features

01Provides multi-language mapping for TypeScript, Java, Kotlin, and Go
02Defines clear domain model and use-case boundaries for clean code
03Establishes explicit composition roots for robust dependency injection
04Creates protocol-agnostic adapters for HTTP, CLI, and message queues
05Implements inbound and outbound ports to enforce dependency inversion
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Use Cases

01Supporting multiple delivery mechanisms like REST APIs and Cron jobs for the same logic
02Decoupling web frameworks from business rules to enable isolated unit testing
03Refactoring tightly coupled legacy services into modular, testable components