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:
Jan. 19, 2016
Filed:
Dec. 16, 2013
Symantec Corporation, Mountain View, CA (US);
Anindya Banerjee, Pune, IN;
Ryan R. Lefevre, Sunnyvale, CA (US);
Symantec Corporation, Mountain View, CA (US);
Abstract
Techniques for evicting cached files may be realized as a method including: maintaining a file system cache storing selected files from a file storage; for files that are above a threshold size, selectively storing chunks of the files; for each file that is stored, associating an access bit and a size bit with that file; for each file that is stored selectively as file chunks, associating an access bitmap to the file having an access bit associated with each file chunk; when a file is accessed, setting the access bit associated with the file and file chunk to indicate recent access; at set intervals, periodically clearing the access bits to not indicate recent access; and carrying out a cache eviction process comprising evicting at least one file or file chunk associated with an access bit that does not indicate recent access.