välimuististaan

Välimuististaan is a Finnish word that translates to "from its cache" or "from their cache" in English. It refers to the act of retrieving or accessing information that has been stored in a temporary memory location, known as a cache. This term is commonly used in computer science and technology contexts.

Caches are designed to speed up data access by storing frequently used information closer to the processor or the application that needs it. When a program or system requests data, it first checks the cache. If the data is found in the cache (a cache hit), it can be retrieved much faster than if it had to be fetched from a slower storage medium like a hard drive or main memory. If the data is not in the cache (a cache miss), it is retrieved from its original location and then typically copied into the cache for future use.

Therefore, "välimuististaan" implies that the information was not retrieved from its primary or original source, but rather from this faster, intermediate storage. This concept is fundamental to optimizing performance in many computing systems, from web browsers storing recently visited pages to CPUs caching frequently accessed instructions. The efficiency of a cache is often measured by its hit rate, the proportion of requests that are satisfied by the cache.