Five minute rule computer science (1 résultats)

Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Please note that the content of this book primarily consists of articlesavailable from Wikipedia or other free sources online. In computerscience, the five-minute rule is a rule of thumb for deciding whether adata item should be kept in memory, or stored on disk and read back intomemory when required. It was first formulated by Jim Gray and G. F.Putzolu in 1987, and then subsequently revised in 1997 and 2007 toreflect changes in the relative cost and performance of memory andpersistent storage. The rule is as follows: The 5-minute random rule:cache randomly accessed disk pages that are re-used every 5 minutes.…