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ShadowDB: A Replicated Database on a Synthesized Consensus Core
Nicolas Schiper, Vincent Rahli, Robbert Van Renesse, Mark Bickford, and Robert L. Constable, Cornell University
This paper describes ShadowDB, a replicated version of the BerkeleyDB database. ShadowDB is a primary-backup based replication protocol where failure handling, the critical part of the protocol, is taken care of by a synthesized consensus service that is correct by construction. The service has been proven correct semi-automatically by the Nuprl proof assistant. We describe the design and process to prove the consensus protocol correct and present the database replication protocol. The performance of ShadowDB is good in the normal case and recovering from a failure only takes seconds. Our approach offers simplified means to diversify the code in a way that preserves correctness.
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author = {Nicolas Schiper and Vincent Rahli and Robbert Van Renesse and Mark Bickford and Robert L. Constable},
title = {ShadowDB: A Replicated Database on a Synthesized Consensus Core},
booktitle = {Eighth Workshop on Hot Topics in System Dependability (HotDep 12)},
year = {2012},
address = {Hollywood, CA},
url = {https://www.usenix.org/conference/hotdep12/workshop-program/presentation/Schiper},
publisher = {{USENIX} Association},
month = oct,
}
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