orthogonality-principle

Reduce coupling by designing components with clear, independent responsibilities and minimal dependencies between modules. Enforce orthogonality—each component should handle one concern, communicate through stable interfaces, and avoid side effects on unrelated modules. This localizes changes so modifications in one area don't ripple through the system.

Refactor by extracting cross-cutting logic into separate, focused services with defined boundaries. Wire dependencies explicitly without altering unrelated modules. Apply separation of concerns to ensure each component has a single, clear purpose. This improves testability and makes future changes safer and faster.

Separation of concerns isolates distinct responsibilities into independent components with minimal interaction. Each component changes for one reason only, preventing cascading failures. Clear interface boundaries make testing easier, enable component reuse, and let teams work on different areas without interference.

Yes. Design APIs with orthogonal endpoints and operations—each should handle one concern independently. Avoid overlapping functionality, minimize side effects across operations, and use clear contracts. This reduces coupling between clients and services, making APIs easier to extend and maintain.

Decoupled components can be tested in isolation without mocking unrelated dependencies. Orthogonal design means each component's behavior is independent, so tests stay simple, run faster, and accurately validate single responsibilities. Failures pinpoint exact problems instead of cascading through interconnected code.