US Patent 10102150 Adaptive smart data cache eviction

An adaptive smart data cache eviction method takes file-based quotas into account during eviction of WEUs as opposed to a default eviction policy that treats all files the same. Adaptive smart data cache eviction is a granular and dynamic eviction of the least frequently and least recently accessed blocks contained in a WEU for those files that have exceeded file-based quotas established for them or that are determined to be candidates for eviction based on the number of blocks stored for them relative to other files and how frequently and recently those blocks were accessed.