What are the differences between LRU and LFU caching algorithms?
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What are the differences between LRU and LFU caching algorithms?
LRU (Least Recently Used) evicts the least recently accessed items, while LFU (Least Frequently Used) removes the least frequently accessed items.
Can you give an example of when to use LRU over LFU?
Use LRU when you expect access patterns to favor recent items, like in web caching. LFU is better for stable access patterns.
What are the advantages of using LFU?
LFU can be more efficient in scenarios where certain items are accessed much more frequently than others, ensuring they stay in cache.
Are there any downsides to using LRU?
Yes, LRU can suffer from cache thrashing if access patterns are highly variable, leading to frequent evictions.
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