What is the best caching algorithm for web applications?

What is the best caching algorithm for web applications?

The best caching algorithm often depends on the specific use case, but popular choices include LRU (Least Recently Used) and LFU (Least Frequently Used). LRU is great for scenarios where you want to keep the most recently accessed items, while LFU is better for keeping frequently accessed items.

Can you explain how LRU works?

Sure! LRU keeps track of the order in which items are 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 LFU?

LFU is beneficial because it prioritizes items that are accessed frequently over time, which can lead to better cache hit rates for stable workloads.

Are there any downsides to these algorithms?

Yes, LRU can suffer from thrashing if the access pattern is highly variable, while LFU can be less effective if the access patterns change frequently.