Two Epoch Algorithms for Disaster Recovery

Remotebackup copies of databasesare often maintained to ensureavailability of dataevenin thepresenceof extensive failures, for which local replication mechanismsmay be inadequate.We presenttwo versionsof an epochalgorithm for maintaining aconsistentremotebackupcopy of a database.The algorithms ensurescalability, which makes them suitable for very large databases.The correctness and the performanceof the algorithms are discussed,and an additional application for distributed group commit is given.

• Type: Conference
• Year: 1990
• Where: VLDB
• Authors: Hector Garcia-Molina, Christos A. Polyzois, Robert B. Hagmann
• Keywords: Database, Database.The Algorithms Ensurescalability, Extensive Failures, Large Databases.The Correctness, VLDB 1990