SYSTEMS AND METHODS FOR A FILE-LEVEL CACHE
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United States of America Patent
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Aug 2, 2016
Grant Date -
Jul 23, 2015
app pub date -
Mar 31, 2015
filing date -
Feb 15, 2011
priority date (Note) -
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Abstract
A multi-level cache comprises a plurality of cache levels, each configured to cache I/O request data pertaining to I/O requests of a different respective type and/or granularity. The multi-level cache may comprise a file-level cache that is configured to cache I/O request data at a file-level of granularity. A file-level cache policy may comprise file selection criteria to distinguish cacheable files from non-cacheable files. The file-level cache may monitor I/O requests within a storage stage, and may service I/O requests from a cache device.
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