LLD - Behavioral Design Patterns — Part 1
You need to design a system where multiple UI components update automatically when a data model changes. Which feature of the Observer pattern helps achieve this?
You need to design a system where multiple UI components update automatically when a data model changes. Which feature of the Observer pattern helps achieve this?
hard📝 Trade-off Q8 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand system requirement
UI components must update automatically when data changes.Step 2: Identify Observer pattern benefit
Observer pattern decouples data model and UI, allowing independent updates.Final Answer:
Decoupling the data model from UI components -> Option CQuick Check:
Observer pattern enables decoupling [OK]
Quick Trick: Observer pattern decouples subject and observers [OK]
Common Mistakes:
MISTAKES- Thinking UI must poll data model
- Embedding UI logic in data model breaks separation
- Using single observer limits flexibility
Master "Behavioral Design Patterns — Part 1" in LLD
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore LLD Quizzes