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It relies on the principle of locality , storing data that the processor is likely to need next or has recently used to minimize wait times.

It is typically organized into levels (L1, L2, L3), where L1 is the fastest and smallest, while L3 is larger and slightly slower but still much faster than main memory. Cache Memory in Computer Organization - GeeksforGeeks

Like RAM, it is volatile memory , meaning all stored data is lost once the computer is powered off.

A primary feature of is its extremely high speed , which allows it to act as a high-speed buffer between the CPU and the main memory (RAM). Key Characteristics