What is Clean Architecture?
Clean Architecture is a software design principle coined by Robert C. Martin (Uncle Bob) that emphasizes the separation of concerns within a software application. It aims to create systems that are easy to understand, maintain, and expand over time. In Clean Architecture, the code is organized into layers that each have distinct responsibilities, which helps in isolating business logic from external concerns like frameworks, databases, and user interfaces.
Core Principles
- Independence of Frameworks: The architecture does not depend on any specific framework, allowing developers to choose or change frameworks without affecting the business logic.
- Testability: Components are designed to be independently testable, enabling automated tests for business rules without being affected by external elements.
- UI Agnosticism: The system's UI can vary without requiring changes to the core logic, promoting flexibility in design.
- Separation of Concerns: Different aspects of the application are separated into layers, which can be worked on independently.
Layered Structure
The primary layers in Clean Architecture include the Entities Layer, Use Cases Layer, Interface Adapters Layer, and Frameworks & Drivers Layer. Each layer has specific responsibilities, ensuring clear boundaries which enhance maintainability and scalability.
In summary, Clean Architecture provides a blueprint for creating resilient and adaptable software solutions, fostering a sustainable development environment.