Deferred locking with shadow transaction for client-server DBMSs

Data-shipping systems that allow inter-transaction caching raise the need of a transactional cache consistency maintenance (CCM) protocol because each client is able to cache a portion of the database dynamically. Deferred locking (DL) is a new CCM scheme that is capable of reducing the communication overhead required for cache consistency checking. Due to its low communication overhead, DL could show a superior performance, but it tends to exhibit a high ratio of transaction abort. To cope with this drawback, we develop a new notion of shadow transaction, which is a backup-purpose one that is kept ready to replace an aborted transaction. This notion and the locking mechanism of DL have been incorporated into deferred locking with shadow transaction. Using a distributed database simulation model, we evaluate the performance of the proposed schemes under a wide range of workloads. (C) 2005 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2006-07
Language
ENG
Keywords

CONCURRENCY-CONTROL; PERFORMANCE; SYSTEM

Citation

JOURNAL OF SYSTEMS ARCHITECTURE, v.52, no.7, pp.373 - 393

ISSN
1383-7621
DOI
10.1016/j.sysarc.2005.09.002
URI
http://hdl.handle.net/10203/4155
Appears in Collection
KGSM-Journal Papers(저널논문)
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