What are caching algorithms and how do they work?

What are caching algorithms and how do they work?

Caching algorithms are methods used to store frequently accessed data in a cache to improve retrieval speed. They determine what data to keep in the cache and what to evict when the cache is full.

Can you explain some common caching algorithms?

Sure! Some common caching algorithms include Least Recently Used (LRU), First In First Out (FIFO), and Least Frequently Used (LFU). Each has its own strategy for managing cache entries.

What is the difference between LRU and LFU?

LRU evicts the least recently used items, while LFU removes the least frequently accessed items. LRU focuses on recency, whereas LFU focuses on frequency.

When should I use a caching algorithm?

You should use a caching algorithm when you have data that is expensive to retrieve or compute, and you want to improve performance by reducing access times.