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, improving retrieval speed. They determine what data to keep and what to discard.

Can you explain the different types of caching algorithms?

Sure! Common types include LRU (Least Recently Used), FIFO (First In First Out), and LFU (Least Frequently Used). Each has its own strategy for managing cache.

What is the LRU algorithm?

LRU stands for Least Recently Used. It keeps track of the order in which items are accessed and removes the least recently used item when the cache is full.

How does FIFO differ from LRU?

FIFO, or First In First Out, removes the oldest item in the cache, regardless of how often it has been accessed, unlike LRU which considers usage frequency.

When should I use LFU over LRU?

LFU is ideal when you want to keep frequently accessed items in the cache longer, while LRU is better for scenarios with temporal locality.