What are the main challenges of cache consistency in distributed systems?
The main challenges include data staleness, synchronization overhead, and the complexity of maintaining consistency across nodes.
Can you explain data staleness and why it's a problem?
Data staleness occurs when a cache holds outdated information. This can lead to incorrect decisions based on old data.
How do different consistency models address these challenges?
Different models like eventual consistency, strong consistency, and causal consistency offer various trade-offs between performance and accuracy.
What strategies can be used to improve cache consistency?
Strategies include using versioning, timestamps, and implementing cache invalidation protocols to ensure data accuracy.
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