LLD - Design — Chess Game
What modification to the Observer pattern can help maintain UI responsiveness when a large number of observers need updates?
What modification to the Observer pattern can help maintain UI responsiveness when a large number of observers need updates?
hard📝 Trade-off Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Identify performance bottleneck
Synchronous notifications to many observers can block UI rendering.Step 2: Use asynchronous updates
Asynchronous notification allows UI to remain responsive by not blocking the main thread.Step 3: Batch updates
Batching reduces the number of update calls, improving efficiency.Final Answer:
Implement asynchronous notification with batching of updates -> Option BQuick Check:
Async + batching improves responsiveness [OK]
Quick Trick: Async notifications with batching improve UI speed [OK]
Common Mistakes:
- Forcing synchronous updates causing lag
- Polling instead of event-driven updates
- Using a single observer causing bottlenecks
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