In designing a notification system supporting email, SMS, and push notifications, how does applying the Strategy pattern improve the system?

hard📝 Trade-off Q8 of 15

LLD - Behavioral Design Patterns — Part 1

In designing a notification system supporting email, SMS, and push notifications, how does applying the Strategy pattern improve the system?

AIt allows adding new notification methods without modifying existing code

BIt forces all notifications to use the same sending algorithm

CIt tightly couples notification types with the client code

DIt eliminates the need for interfaces or abstract classes

Step-by-Step Solution

Solution:

Step 1: Understand Strategy pattern role
It encapsulates algorithms (notification methods) and makes them interchangeable.
Step 2: Benefit in notification system
New notification types can be added by implementing the Strategy interface without changing existing code.
Final Answer:
It allows adding new notification methods without modifying existing code -> Option A
Quick Check:
Supports extension without modification [OK]

Quick Trick: Strategy enables easy extension of algorithms [OK]

Common Mistakes:

MISTAKES

Master "Behavioral Design Patterns — Part 1" in LLD

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More LLD Quizzes