LLD - Design — Chess Game
You want to combine the Observer pattern with a caching mechanism to reduce UI update frequency. Which approach is best?
You want to combine the Observer pattern with a caching mechanism to reduce UI update frequency. Which approach is best?
hard📝 Trade-off Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand caching goal
Caching aims to reduce frequent UI updates by grouping changes.Step 2: Apply batch update strategy
Batching updates and notifying observers periodically reduces update frequency and improves performance.Final Answer:
Batch updates and notify observers periodically -> Option DQuick Check:
Batching updates reduces UI update frequency [OK]
Quick Trick: Batch updates to reduce UI refresh frequency [OK]
Common Mistakes:
- Notifying observers immediately defeats caching
- Removing caching loses performance benefits
- Caching observer objects instead of data is ineffective
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