NDLI: Postgres-R(SI): combining replica control with concurrency control based on snapshot isolation

Content Provider	IEEE Xplore Digital Library
Author	Wu, S. Kemme, B.
Copyright Year	2005
Description	Author affiliation: Sch. of Comput. Sci., McGill Univ., Montreal, Que., Canada (Wu, S.; Kemme, B.)
Abstract	Replicating data over a cluster of workstations is a powerful tool to increase performance, and provide fault-tolerance for demanding database applications. The big challenge in such systems is to combine replica control (keeping the copies consistent) with concurrency control. Most of the research so far has focused on providing the traditional correctness criteria serializability. However, more and more database systems, e.g., Oracle and PostgreSQL, use multi-version concurrency control providing the isolation level snapshot isolation. In this paper, we present Postgres-R(SI), an extension of PostgreSQL offering transparent replication. Our replication tool is designed to work smoothly with PostgreSQL's concurrency control providing snapshot isolation for the entire replicated system. We present a detailed description of the replica control algorithm, and how it is combined with PostgreSQL's concurrency control component. Furthermore, we discuss some challenges we encountered when implementing the protocol. Our performance analysis based on the TPC-W benchmark shows that this approach exhibits excellent performance for real-life applications even if they are update intensive.
Sponsorship	IEEE Comput. Soc. Database Soc. of Japan (DBSJ) Inf. Process. Soc. of Japan (IPSJ) Inst. of Electron., Inf. and Commun. Eng. (IEICE)
Starting Page	422
Ending Page	433
File Size	320125
Page Count	12
File Format	PDF
ISBN	0769522858
ISSN	10844627
DOI	10.1109/ICDE.2005.108
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-05
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Concurrency control Database systems Transaction databases Control systems Middleware Computer science Workstations Application software Protocols Performance analysis
Content Type	Text
Resource Type	Article
Subject	Signal Processing Information Systems Software

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