design-patterns

To fix a growing switch chain, apply the Strategy pattern to encapsulate varying algorithms and simplify runtime behavior selection. It decouples algorithm swapping from module design and reduces brittle code branches during refactoring.

You need the Factory pattern for object creation when constructors become complex or tightly coupled. It centralizes instantiation logic, simplifies multi-consumer event decoupling, and aligns class refactoring with SOLID principles.

Decouple multiple event reactions in an event-driven architecture by applying the Observer pattern. It allows modules to subscribe to events without tight coupling, ensuring structural decoupling and better code organization during architecture planning.

The best way to refactor deep inheritance and tight coupling is using Composition and SOLID principles. This approach splits unclear single responsibilities, simplifies testing, and selects patterns like Strategy to improve code structure extensibility.

Applying SOLID principles significantly helps with class refactoring and algorithm swapping by clarifying single responsibilities. It guides structural and behavioral pattern selection, reducing misapplied abstractions and brittle designs during code reviews.