What are the differences between LRU cache and other caching strategies?

What are the differences between LRU cache and other caching strategies?

LRU (Least Recently Used) cache evicts the least recently accessed items first, while other strategies like FIFO (First In, First Out) and LFU (Least Frequently Used) have different eviction policies.

Can you explain how LRU cache works in more detail?

Sure! LRU cache maintains a list of items in the order they were accessed. When the cache reaches its limit, it removes the least recently used item to make space for new data.

What are the advantages of using LRU over FIFO or LFU?

LRU is often more efficient for workloads with temporal locality, where recently accessed items are likely to be accessed again soon. This can lead to better cache hit rates compared to FIFO or LFU.

Are there any downsides to using LRU caching?

Yes, LRU can be more complex to implement and may require additional memory for tracking access order, which can be a drawback in memory-constrained environments.