How performance of a computer system is improved using a cache memory ? What are their advantages and disadvantages ?

Cache memory is a block of high speed memory where data is copied when it is retrieved from the RAM. This storage of key instructions enables a performance improvement in the processor. It stores the program that can be executed within a short period of time. Advantages: The advantages of cache memory are as follows - Cache memory is faster than main memory. It consumes less access time as compared to main memory. It stores the program that can be executed within a short period of time. It stores data for temporary use. Disadvantages: The disadvantages of cache memory are as follows - Cache memory has limited capacity. It is very expensive.