What is a cache in computing?

A cache in computing refers to a hardware or software component that stores data so that future requests for that data can be served faster. Caches are commonly used to temporarily hold frequently accessed information, reducing the time it takes to retrieve data from slower storage areas or remote servers. For example, web browsers use cache to store web pages, images, and other resources to speed up page loading. Similarly, processors use cache memory to store instructions and data that are repeatedly accessed, improving overall system performance.