architecture-patterns

What problem does it solve?

Designing maintainable, testable, and scalable backend systems is a complex challenge. This Skill provides a deep dive into proven architectural patterns like Clean Architecture, Hexagonal Architecture, and Domain-Driven Design, helping you build resilient applications.

Core Features & Use Cases

• Clean Architecture: Guides on structuring layers (Entities, Use Cases, Adapters, Frameworks) with inward-pointing dependencies.
• Hexagonal Architecture: Explains Ports and Adapters for technology-agnostic core logic and easy testability.
• Domain-Driven Design (DDD): Covers strategic (Bounded Contexts) and tactical (Entities, Value Objects, Aggregates, Repositories) patterns.
• Use Case: When starting a new complex backend system, this Skill helps you choose and implement an architecture that ensures business logic is independent of frameworks, making the system highly testable and adaptable.

Quick Start

Example: Structure a Clean Architecture project

This outlines the recommended directory structure for a Clean Architecture application.

app/ ├── domain/ # Entities & business rules ├── use_cases/ # Application business rules ├── adapters/ # Interface implementations └── infrastructure/ # Framework & external concerns