Cache management using historical access information

Details Cache management using historical access information Cache management using historical access information

2007-02-13

2007-02-13

Nguyen, Hiep T. (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S158000

Reexamination Certificate

active

10825815

ABSTRACT:
A caching manager calculates cache priories for accessed items, including items not currently stored in the cache. The cache manager determines an item's cache priority as a function of the item's access frequency, retrieval cost and size. The cache manager dynamically updates cache priorities as items are accessed. When the cache is full and a non-cached item is accessed, the cache manager uses cache priorities to determine whether to overwrite a cached item with the non-cached accessed item. If the accessed item has a lower cache priority than all of the items in the cache, then the non-cached item is not stored in the cache. If any item in the cache has a lower cache priority than the accessed item, then the cache manager stores the accessed item in the cache, overwriting the cached item with the lowest cache priority.

REFERENCES:
patent: 6269382 (2001-07-01), Cabrera et al.
patent: 6490666 (2002-12-01), Cabrera et al.
patent: 6757794 (2004-06-01), Cabrera et al.

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