= Cache replacement policies
{wiki=Cache_replacement_policies}
Cache replacement policies are algorithms used in computer systems to determine which data should be removed from a cache when new data needs to be loaded. Caches are small, fast storage areas that hold copies of frequently accessed data to improve performance by reducing access times to slower main memory. When a new item must be loaded into the cache and there is no space available, a replacement policy decides which existing item should be evicted.
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