!!! Overview
[{$pagename}] is a hardware or software component that stores [data] so future requests for that [data] can be served faster; the [data] stored in a cache might be the result of an earlier computation, or the duplicate of [data] stored elsewhere. 

A [cache hit] occurs when the requested data can be found in a cache, while a [cache miss] occurs when it cannot. [Cache hits] are served by reading [data] from the [{$pagename}], which is faster than recomputing a result or reading from a slower data store; thus, the more requests can be served from the cache, the faster the system performs.

To be cost-effective and to enable efficient use of [data], caches are relatively small. Nevertheless, caches have proven themselves in many areas of computing because access patterns in typical computer applications exhibit the locality of reference. Moreover, access patterns exhibit temporal locality if data is requested again that has been recently requested already, while spatial locality refers to requests for data physically stored close to data that has been already requested.

[Cache replacement algorithms] determine the method in which [data] is replaced within the [cache]


!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [Cache_(computing)|Wikipedia:Cache_(computing)|target='_blank'] - based on information obtained 2017-01-05