Deep Dive into Dependency Inversion
Master the Dependency Inversion Principle to decouple high-level modules from low-level modules, promoting flexibility.
What is Dependency Inversion?
Welcome to a deep dive into the Dependency Inversion Principle (DIP), a cornerstone of flexible and maintainable software design.
DIP is one of the five SOLID principles. It helps us build systems where changes in low-level details don't force changes in high-level business logic.
High-Level vs. Low-Level
To understand DIP, we first need to distinguish between high-level and low-level modules:
- High-level modules: Contain important business logic and policies (e.g., 'Process an Order').
- Low-level modules: Deal with implementation details (e.g., 'Save to Database', 'Send Email').
Traditionally, high-level modules depend on low-level modules. DIP flips this relationship.
All lessons in this course
- Deep Dive into Dependency Inversion
- Interface Segregation in Practice
- Refactoring with Design Patterns
- Single Responsibility and Open-Closed Mastery