“Efficient State Transfer for Recovery-Based Byzantine-Fault-Tolerant State Machine Replication”

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Rogério Correia, Paulo Sousa

in Actas do INForum - Simpósio de Informática 2009, Lisbon, Portugal, September 2009., Sept. 2009.

Abstract: This paper presents an effifficient state-transfer protocol for Byzantine-fault-tolerant state machine replication systems enhanced with recovery mechanisms. Usually the recovery of a stateful replica consumes a considerable amount of time, mostly due to state transfer. As a result it is essential to reduce the state transfer time, simultaneously ensuring that correct replicas never lose their state. Our approach consists on creating periodic state checkpoints stored in a distributed secure component, and relying on this component to manage/control state transfer operations. Experimental evaluation results show the performance and overhead of the proposed protocol when combined with a simple application and with a naming and directory service.

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Research line(s): Fault And Intrusion Tolerance in Open Distributed Systems (FIT)

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