|Author||Ganger, Gregory R. ♦ Abd-El-Malek, Michael ♦ Reiter, Michael K. ♦ Goodson, Garth R. ♦ Wylie, Jay J.|
|Source||ACM Digital Library|
|Publisher||Association for Computing Machinery (ACM)|
|Subject Domain (in DDC)||Computer science, information & general works ♦ Data processing & computer science|
|Subject Keyword||Services ♦ Quorums ♦ Byzantine fault-tolerance ♦ Replicated state machines ♦ Fault-scalability|
|Abstract||A fault-scalable service can be configured to tolerate increasing numbers of faults without significant decreases in performance. The Query/Update (Q/U) protocol is a new tool that enables construction of fault-scalable Byzantine fault-tolerant services. The optimistic quorum-based nature of the Q/U protocol allows it to provide better throughput and fault-scalability than replicated state machines using agreement-based protocols. A prototype service built using the Q/U protocol outperforms the same service built using a popular replicated state machine implementation at all system sizes in experiments that permit an optimistic execution. Moreover, the performance of the Q/U protocol decreases by only 36% as the number of Byzantine faults tolerated increases from one to five, whereas the performance of the replicated state machine decreases by 83%.|
|Description||Affiliation: Carnegie Mellon University (Abd-El-Malek, Michael; Ganger, Gregory R.; Reiter, Michael K.; Wylie, Jay J.) || Network Appliance, Inc. (Goodson, Garth R.)|
|Age Range||18 to 22 years ♦ above 22 year|
|Education Level||UG and PG|
|Learning Resource Type||Article|
|Publisher Place||New York|
|Journal||ACM SIGOPS Operating Systems Review (OPSR)|
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