Cache memory is known for the fast computing of any instruction. An observable fact it uses is the locality of reference idea which is supposed to be keeping some data for use from the main memory, this way on time of execution of certain instruction the data would be in a locality that is local to the processor.
There are also the disk caches extensions to cache. There is a hardware disk cache and software disk cache. The software disk cache is maintained by certain disk drivers or operating systems to accomplish caching tasks. Hardware disk cache is self-regulating and free from the control of CPU. It has its own random access memory and can easily control circuits. Apart from being costly, hardware disk caches are good enough for enhanced process needing a complicated disk controller (Bramer).
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