What are the key developments in cache algorithms over the years?

What are the key developments in cache algorithms over the years?

Cache algorithms have evolved significantly since the 1960s, starting with basic techniques like LRU (Least Recently Used) and FIFO (First In, First Out). In the 1980s, more sophisticated algorithms like LFU (Least Frequently Used) emerged, and in recent years, machine learning techniques have been applied to optimize caching.

Can you explain how LRU works?

LRU, or Least Recently Used, keeps track of the order in which items are accessed. When the cache reaches its limit, it removes the least recently accessed item to make space for new data.

What are some modern cache algorithms?

Modern cache algorithms include ARC (Adaptive Replacement Cache), which balances between LRU and LFU, and machine learning-based approaches that predict future accesses based on historical data.

How do these algorithms impact system performance?

Effective cache algorithms can significantly improve system performance by reducing access times and minimizing latency, leading to faster data retrieval and overall efficiency.