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. Other strategies like FIFO (First In, First Out) and LFU (Least Frequently Used) have different eviction criteria. Would you like to know more about a specific strategy?

Can you explain how FIFO works?

FIFO cache evicts the oldest items first, regardless of how often they are accessed. It's simple but can lead to inefficiencies if older items are still frequently used.

What about LFU? How does it differ from LRU?

LFU (Least Frequently Used) evicts items that are used least often, which can be more efficient than LRU in some scenarios, especially when access patterns are stable.

Which caching strategy is the best for web applications?

It depends on the specific use case. LRU is often preferred for its balance of performance and simplicity, but LFU can be better for stable access patterns.