LRU Cache vs LFU Cache: Which is Better?

What is the difference between LRU and LFU caching?

LRU (Least Recently Used) evicts the least recently accessed items, while LFU (Least Frequently Used) removes the least frequently accessed items.

In what scenarios would you prefer LRU over LFU?

LRU is preferred when access patterns are temporal, meaning recently accessed items are likely to be accessed again soon.

Can you give an example of when LFU would be more effective?

LFU is effective in scenarios where certain items are accessed frequently over time, regardless of when they were last accessed.

Which caching strategy is more memory efficient?

Memory efficiency can vary based on usage patterns, but LFU can be more efficient in scenarios with stable access patterns.