The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2019
Filed:
May. 17, 2017
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Frederick Douglis, Basking Ridge, NJ (US);
Windsor W. Hsu, San Jose, CA (US);
Hangwei Qian, Cleveland, OH (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
In response to a request for accessing a file stored in a storage system, data objects associated with the file are retrieved from a storage device of the storage system. The data objects of the file are cached in a cache memory. An access sequence of the cached data objects within the file is determined based on metadata of the file, where the access sequence represents a sequential order in time of accessing the cached data objects within the file. In response to a request for cache space reclamation, one or more cached data objects are identified whose next access is a farthest in time from a data object currently being accessed amongst the cached data objects based on the access sequence of the data objects. The identified data objects are evicted from the cache memory whose next access is a farthest amongst the cached data objects.