What are some effective cache replacement strategies?

What are some effective cache replacement strategies?

There are several cache replacement strategies, including Least Recently Used (LRU), First-In-First-Out (FIFO), and Least Frequently Used (LFU). Each has its own advantages depending on the use case.

Can you explain how LRU works?

LRU keeps track of the order in which items are accessed. When the cache is full and a new item needs to be added, it removes the least recently used item.

What about FIFO? How does that differ from LRU?

FIFO removes the oldest item in the cache, regardless of how often it has been accessed, while LRU focuses on usage frequency.

Are there any scenarios where FIFO might be better than LRU?

Yes, FIFO can be simpler to implement and may perform better in situations where access patterns are predictable and consistent.