Separation of Concerns Pattern

About

This skill provides a comprehensive architectural framework for building maintainable and scalable systems through strict component isolation. By guiding the implementation of the Orchestrator pattern, it helps developers separate CLI or API presentation logic from core business rules, facilitating fast unit testing via dependency injection and ensuring that changes in external dependencies remain localized. It is particularly useful for refactoring tangled codebases into clean, professional structures where every component has a single, well-defined responsibility.

Key Features

• Dependency injection patterns for mockable testing
• Localized error handling and validation boundaries
• Orchestrator pattern implementation for decoupled logic
• 0 GitHub stars
• Separation of CLI frameworks from portable logic
• Standardized directory layouts (cmd, pkg, internal)

Use Cases

• Building reusable business logic for CLI, API, and Cron jobs
• Refactoring monolithic handlers into testable, modular components
• Designing systems that require testing without external infrastructure