What are the differences between LFU and LRU caching?

What are the differences between LFU and LRU caching?

LFU (Least Frequently Used) and LRU (Least Recently Used) are two caching algorithms. LFU evicts the least frequently accessed items, while LRU evicts the least recently accessed items.

Can you give me an example of when to use LFU over LRU?

Use LFU when you have data that is accessed frequently but not necessarily in a recent timeframe, like user preferences.

What are the advantages of using LRU?

LRU is simple to implement and works well for data that has temporal locality, meaning recently accessed items are likely to be accessed again.

Are there any scenarios where LFU performs better than LRU?

Yes, LFU can outperform LRU in scenarios with stable access patterns where certain items are consistently accessed more than others.