Methods and apparatus for accessing data using a cache

Details Methods and apparatus for accessing data using a cache Methods and apparatus for accessing data using a cache

2005-05-03

2005-05-03

Kim, Matthew (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S003000, C711S004000, C711S003000

Reexamination Certificate

active

06889292

ABSTRACT:
Mechanisms and techniques disclose a system that provides access to data using a two part cache. The system receives a data access request containing a first data reference, such as an open systems request to access data. The system then obtains a history cache entry from a history cache based on the first data reference and obtains a partition cache entry from a partition cache based on the first data reference. Cache entries contain mappings between open systems reference locations and non-open systems references to locations in the data to be accessed. The system then performs a data access operation as specified by the data access request using a second data reference based upon either the history cache entry or the partition cache entry. Upon performance of the data access operation, the system then updates the history and partition caches with new cache entries and can resize the partition and history caches as needed.

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patent: 6766418 (2004-07-01), Alexander et al.
patent: 20010014929 (2001-08-01), Taroda et al.

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