LLD - Design — Online Shopping Cart
Why is it important to avoid tight coupling between the subject and observers in a notification system?
Why is it important to avoid tight coupling between the subject and observers in a notification system?
hard🧠 Conceptual Q10 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand coupling in design
Tight coupling means components depend heavily on each other, making changes difficult.Step 2: Benefits of loose coupling in notifications
Loose coupling allows adding/removing observers freely without modifying the subject, improving flexibility.Final Answer:
To allow observers to be added or removed without changing the subject code. -> Option DQuick Check:
Loose coupling = flexible observer management [OK]
Quick Trick: Loose coupling enables flexible observer changes [OK]
Common Mistakes:
MISTAKES- Thinking tight coupling is beneficial
- Believing subject should depend on observers
- Assuming observers cannot receive notifications
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