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Evaluating certification protocols in the partial database state machine
Sousa, António Luís Pinto Ferreira de; Moura, Francisco Coelho Soares; Pereira, José, 1973-; Oliveira, Rui Carlos Mendes dePartial replication is an alluring technique to ensure the reliability of very large and geographically distributed databases while, at the same time, offering good performance. By correctly exploiting access locality most transactions become confined to a small subset of the database replicas thus reducing processing, storage access and communication overhead associated with replication. The advantages of part...
Testing the dependability and performance of group communication based database...
Sousa, António Luís Pinto Ferreira de; Pereira, José, 1973-; Soares, L.; Correia Júnior, Alfrânio Tavares; Rocha, L.; Oliveira, Rui Carlos Mendes deDatabase replication based on group communication systems has recently been proposed as an efficient and resilient solution for large-scale data management. However, its evaluation has been conducted either on simplistic simulation models, which fail to assess concrete implementations, or on complete system implementations which are costly to test with realistic large-scale scenarios. This paper presents a tool...
Group-based replication of on-line transaction processing servers
Correia Júnior, Alfrânio Tavares; Sousa, António Luís Pinto Ferreira de; Soares, L.; Pereira, José, 1973-; Moura, Francisco Coelho SoaresSeveral techniques for database replication using group communication have recently been proposed, namely, the Database State Machine, Postgres-R, and the NODO protocol. Although all rely on a totally ordered multicast for consistency, they differ substantially on how multicast is used. This results in different performance trade-offs which are hard to compare as each protocol is presented using a different loa...
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