What is a memory cache-write-hit-write-allocate-update?

What is a memory cache-write-hit-write-allocate-update?

A memory cache-write-hit-write-allocate-update refers to a situation in a computer's memory hierarchy where a write operation is performed on a cache line that is already present in the cache and marked as valid. In this scenario, the cache is updated with the new data being written, and the cache line is not evicted or replaced. Additionally, if the cache line was not initially present in the cache (a cache miss), it is allocated in the cache before the write operation is performed.