Dear Wisam Mohammed Abed Alqaraghuli
Cache is the temporary memory officially termed “CPU cache memory.” This chip-based feature of your computer lets you access some information more quickly than if you access it from your computer’s main hard drive. The data from programs and files you use the most is stored in this temporary memory, which is also the fastest memory in your computer.
Cache reduces retrieval time compared to if data was accessed directly from the main memory (RAM). It is said to be intelligent since it not only stores data but it stores the data that will be used by the processor on its next execution.
It is made up of Static RAM (SRAM) which is either integrated into the processor or in a separate chip within the computer motherboard. Its main function is to increase the processor speed. There are 3 levels of cache memory L1, L2, and L3. In their architecture, they are arranged in such a way that the processor looks for data from cache L1 up to L3 in that order.
Caching is a mechanism that hides slower data storage behind a smaller amount of faster data storage. Cache is the generic term for that faster layer of storage and can usually be seen between ( CPU and Memory ) also ( Memory and I/O device). Think of a cache as a place to keep the "favourites" close to hand while the rest of the information takes longer to access.
The bestsellers shelf at the front of a bookshop could be considered to be a real life cache.
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