Dependency Inversion
Dependency Inversion is a software design principle that states high-level modules should not depend on low-level modules; both should depend on abstractions. It is the 'D' in the SOLID principles of object-oriented design, aiming to reduce coupling between components and improve code maintainability and testability. By inverting dependencies, it allows for more flexible and modular architectures, such as those used in dependency injection frameworks.
Developers should learn and apply Dependency Inversion when building scalable applications that require loose coupling, such as in microservices, enterprise systems, or any project where components need to be easily replaceable or testable. It is particularly useful in scenarios involving dependency injection, mocking for unit tests, and adhering to clean architecture patterns like Hexagonal or Onion Architecture, as it decouples business logic from implementation details.