Discuss the benefits and drawbacks of using cache memory in computer systems, and describe different cache replacement policies.

Cache memory is a small, high-speed type of volatile computer memory that provides high-speed data access to a processor and stores frequently used computer programs, applications, and data.

It is an essential component in modern computer systems, designed to bridge the speed gap between the central processing unit (CPU) and slower main memory (RAM).

Cache memory is closer to the CPU, allowing it to deliver data to the processor much faster than fetching it from the main memory.

However, using cache memory also has its benefits and drawbacks, which will be discussed further.