Electrical computers and digital processing systems: multicomput – Computer network managing – Computer network monitoring
Reexamination Certificate
2007-05-07
2010-12-14
Donaghue, Larry (Department: 2454)
Electrical computers and digital processing systems: multicomput
Computer network managing
Computer network monitoring
C707S634000, C711S141000
Reexamination Certificate
active
07853688
ABSTRACT:
A method of proactively monitoring the coherency of distributed cache. A cache comparison utility selects a set of cache keys from a replica cache connected to a main cache via a network. The cache comparison utility selects a first cache key from the set of cache keys and fetches a first cache value from the replica cache that corresponds to the first cache key. The cache comparison utility generates a first checksum value corresponding to the first cache value and the first cache key and stores the first checksum value in a first checksum table. The cache comparison utility creates a first total checksum value that corresponds to the first checksum table and compares the first total checksum value with multiple total checksum values that correspond to the main cache and one or more additional replica caches, thereby identifying replica caches that are not identical to the main cache.
REFERENCES:
patent: 6813633 (2004-11-01), Wong et al.
patent: 6976205 (2005-12-01), Ziai et al.
patent: 7636767 (2009-12-01), Lev-Ran et al.
patent: 2004/0235523 (2004-11-01), Schrire et al.
Burckart Erik John
Chow Ching Chi
Ivory Andrew
Kelapure Rohit Dilip
Shook Aaron Kyle
Dillon & Yudell LLP
Donaghue Larry
International Business Machines - Corporation
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