Using Replication to Improve Reliability in Distributed Information Systems

Author:Son, Sang, Department of Computer ScienceUniversity of Virginia

Replication is the key factor in improving the availability of data in distributed information systems. Replicated data is stored at multiple sites so that it can be used by the user even when some of the copies are not available due to site failures. In this paper a synchronization scheme for distributed information systems is described. The scheme increases the reliability as well as the degree of concurrency of the system. A token is used to designate a read-write copy. The scheme allows transactions to operate on a data object if more than one token copies are available. The serializability theorem for replicated data and the recovery mechanisms associated with the scheme are discussed.
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Source Citation:

Son, Sang. "Using Replication to Improve Reliability in Distributed Information Systems." University of Virginia Dept. of Computer Science Tech Report (1987).

University of Virginia, Department of Computer Science
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