Computer Hardware Terms, Glossary and Dictionary

No-write allocation is a cache policy where only processor reads are cached to avoid the need for write-back or write-through. A cache stores data duplicating original values stored elsewhere or computed earlier, to speed up data access. When a datum is written to the cache, it must at some point be written to the backing store as well. The timing of this write is controlled by what is known as the write policy.

Related Terms

no-write allocation