English Meaning Of Cache :

Cache

A collection of items of the same type stored in a hidden or inaccessible place.

"An arms cache"

Technical Language Definition: 

Cache memory is random access memory (RAM) that a computer microprocessor can access more quickly than it can access regular RAM.

 As the microprocessor processes data, it looks first in the cache memory and if it finds the data there (from a previous reading of data), it does not have to do the more time-consuming reading of data from larger memory.

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