Cache

Cache (cache memory) – one of the essential parts of computer systems equipment. The scope of the cache comes down to the automatic caching of data which, due to their amount, cannot be handled by the main memory. The cache allows fast access to data stored on the device while separating it from RAM. The cache also saves and classifies objects according to the type of their locality, that is, how they are used. We can distinguish temporal locality – concerning data used repeatedly and spatial locality concerning data prognosed for use due to its close proximity to objects repeatedly requested. The suggestibility of the triggered commands affects the smooth operation of the device – thanks to the cache, the system does not have to download the necessary information each time to perform an operation that has already been performed.