Apparatus, system, and method for cache synchronization

Details Apparatus, system, and method for cache synchronization Apparatus, system, and method for cache synchronization

2004-11-16

2010-06-08

Vo, Tim T. (Department: 2168)

Data processing: database and file management or data structures

File or database maintenance

Synchronization

C707S610000, C707S687000, C707S704000

Reexamination Certificate

active

07734582

ABSTRACT:
An apparatus, system, and method are disclosed for cache synchronization within a multi-tier system having multiple client-server relationships. The apparatus includes a pre-synchronization module, a locking module, and a synchronization module. The pre-synchronization module receives a pre-synchronization call from an upstream node coupled to a first downstream node. The locking module locks a first cache coupled to the first downstream node in response to a synchronization call from the upstream node. The synchronization module synchronizes source data on the upstream node with cached data on the first cache. The apparatus also may include a post-synchronization module to perform any necessary cleanup activities. Advantageously, the apparatus, system, and method reduce the likelihood of a system deadlock due to premature locking of the first downstream cache, which prevents a subsequent downstream cache from synchronizing with the first cache.

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“CIFS”, www.webopedia.com/TERM/C/COFS.html Sep. 20, 2004.

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