Cache Replacement Policies

Cache replacement policies are strategies that determine which data to remove from a computer’s cache when new data needs to be stored. Since cache memory is limited, these policies help optimize performance by choosing the most suitable data to discard, ensuring frequently used or important data remains accessible. Common policies include Least Recently Used (LRU), which removes the data that hasn’t been accessed for the longest time, and First-In-First-Out (FIFO), which deletes the oldest data. These strategies improve processing speed by keeping the most relevant data readily available.