Architecture & LLD Preview
Observer Pattern
Establish a one-to-many relationship where multiple listeners react automatically to state changes in a subject.
Observer pattern establishes a one-to-many dependency so that when one object changes state, all its dependents are notified automatically.
Core Design Challenge
"How do we notify multiple objects of a state change without tight coupling?"
What You'll Learn:
- ✦Establishing one-to-many dependency broadcasts
- ✦Subscribing and unsubscribing listeners dynamically at runtime
- ✦Decoupling publishers from their concrete subscriber lists
- ✦Implementing event-driven architectures and state hooks