Cache algorithms are methods used to manage data stored in a cache, which is a smaller, faster type of memory that temporarily holds frequently accessed information. These algorithms determine which data to keep in the cache and which to remove, optimizing performance and speed. Common cache algorithms include Least Recently Used (LRU), First In First Out (FIFO), and Least Frequently Used (LFU). The choice of cache algorithm can significantly impact the efficiency of systems like web browsers, databases, and operating systems. By effectively managing cached data, these algorithms help reduce access times and improve overall system responsiveness, ensuring that users experience faster load times and smoother operations.