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Replication control for fault-tolerance in distributed real-time database systems

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3 Author(s)
Son, S.H. ; Dept. of Comput. Sci., Virginia Univ., Charlottesville, VA, USA ; Fengjie Zhang ; Ji-Hoon Kang

In many distributed real-time systems, certain critical data need to be replicated to achieve fault-tolerance and improved performance. Schedulers for such distributed real-time systems must satisfy timing constraints of transactions and preserve data consistency. In this paper we presents a replication control algorithm, which integrates real-time scheduling and replication control to achieve the desired level of fault-tolerance. The algorithm adopts a majority consensus scheme for replication control and employs epsilon-serializability, a correctness criterion which is less stringent than conventional one-copy serializability. The performance of the algorithm is compared with that of a real-time token-based algorithm

Published in:

Aerospace Conference, 1998 IEEE  (Volume:4 )

Date of Conference:

21-28 Mar 1998