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What is Caching?

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Caching is the practice of storing recent results and reusing them when possible. It is a common computing design that is often build into services, applications, clients such as web browsers, operating systems and hardware devices such as CPUs and data storage devices. In many cases, a cache is held on a faster type of technology than the original data. For example, images accessed over a network may be cached on a local disk to improve web browsing speed. Beyond access speed, caches may include things that were time consuming to compute such as the results of a complex algorithm.
Overview: Caching
Type
Computing
Coding
Networking
Definition
Storing recent results and implementing ways to reuse them if they are requested again within a predefined period of time.
Value
Improves the speed of computing.
Related Concepts
Precomputation
Computing
Coding
Networking

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Citation

John Spacey. "What is Caching?." Simplicable. Retrieved June 21, 2026. from https://simplicable.com/IT/caching

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