Cache mapping defines how a block from the main memory is mapped to the cache memory in case of a cache miss.

Why is cache mapping needed?

Cache Memory is a special very high-speed memory. It is used to speed up and synchronizing with high-speed CPU. ... It holds frequently requested data and instructions so that they are immediately available to the CPU when needed. Cache memory is used to reduce the average time to access data from the Main memory.

What is cache mapping?

Cache mapping is a technique by which the contents of main memory are brought into the cache memory. Different cache mapping techniques are- Direct Mapping. Fully Associative Mapping.