Cache policies determine how data is stored and retrieved from a cache, which is a small and fast storage area that holds frequently accessed data to reduce the latency of accessing that data from a slower, larger, and more distant storage location, such as main memory or disk. Different cache policies are designed to optimize various aspects of cache performance, including hit rate, latency, and consistency. Here are some common types of cache policies: Least Recently Used (LRU): LRU is a commonly used cache replacement policy. It evicts the least recently accessed item when the cache is full. LRU keeps track of the order in which items were accessed and removes the item that has not been accessed for the longest time. First-In-First-Out (FIFO): FIFO is a simple cache replacement policy. It removes the oldest item from the cache when new data needs to be stored, regardless of how frequently the items have been accessed. Most Recently Used (MRU): MRU removes the most recently accessed ...
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