Can I use this skill for simple CRUD applications?

While it can be used for any project, these patterns are most effective for applications with complex business logic where maintainability and long-term scalability are priorities.

What programming languages does this skill support?

The Clean & Hexagonal DDD skill is language-agnostic and provides implementation patterns suitable for Go, Rust, Python, TypeScript, Java, and any other backend language.

What is the difference between Domain-Driven Design and Clean Architecture in this skill?

Domain-Driven Design (DDD) focuses on modeling the complexity of the business domain, while Clean Architecture and Hexagonal patterns focus on the technical structure and dependency management to keep that domain model pure.

How does this architecture improve software testing?

By using the Hexagonal (Ports & Adapters) pattern, you can isolate business logic from external dependencies, allowing you to easily swap real databases or APIs for mocks and in-memory test doubles.

Clean & Hexagonal Architecture Patterns

Name: Clean & Hexagonal Architecture Patterns
Author: ccheney

byccheney

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API Development

Implements scalable backend structures using Clean Architecture, Domain-Driven Design, and Hexagonal patterns.

About

This skill provides a comprehensive framework for building robust, maintainable, and testable backend systems by integrating Domain-Driven Design (DDD), Clean Architecture, and Hexagonal (Ports & Adapters) patterns. It guides developers through modeling complex business domains, enforcing strict inward-pointing dependency rules, and isolating external concerns like databases and third-party APIs. By following these architectural standards, teams can ensure their core business logic remains independent of frameworks and UI changes, making the codebase easier to evolve and test across various languages including Go, Rust, Python, and TypeScript.

Key Features

Strict enforcement of the inward-pointing dependency rule
Comprehensive DDD tactical patterns including Aggregates, Entities, and Value Objects
Hexagonal Port & Adapter isolation for infrastructure and external services
Language-agnostic guidance for Go, Rust, Python, TypeScript, and Java
Standardized project directory structure for consistent organization
1 GitHub stars

Use Cases

Architecting new microservices with clear domain boundaries and high testability
Refactoring legacy monoliths into maintainable, decoupled domain layers
Decoupling core business logic from database, message broker, and framework dependencies

About

Key Features

Strict enforcement of the inward-pointing dependency rule
Comprehensive DDD tactical patterns including Aggregates, Entities, and Value Objects
Hexagonal Port & Adapter isolation for infrastructure and external services
Language-agnostic guidance for Go, Rust, Python, TypeScript, and Java
Standardized project directory structure for consistent organization
1 GitHub stars

Use Cases

Architecting new microservices with clear domain boundaries and high testability
Refactoring legacy monoliths into maintainable, decoupled domain layers
Decoupling core business logic from database, message broker, and framework dependencies