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Brief Announcement
DOI: 10.4230/LIPIcs.DISC.2019.44
Brief Announcement: Revisiting Consensus Protocols through Wait-Free Parallelization

Authors: Suyash Gupta, Jelle Hellings, and Mohammad Sadoghi

Published in: LIPIcs, Volume 146, 33rd International Symposium on Distributed Computing (DISC 2019)

Abstract
In this brief announcement, we propose a protocol-agnostic approach to improve the design of primary-backup consensus protocols. At the core of our approach is a novel wait-free design of running several instances of the underlying consensus protocol in parallel. To yield a high-performance parallelized design, we present coordination-free techniques to order operations across parallel instances, deal with instance failures, and assign clients to specific instances. Consequently, the design we present is able to reduce the load on individual instances and primaries, while also reducing the adverse effects of any malicious replicas. Our design is fine-tuned such that the instances coordinated by non-faulty replicas are wait-free: they can continuously make consensus decisions, independent of the behavior of any other instances.
Cite as

Suyash Gupta, Jelle Hellings, and Mohammad Sadoghi. Brief Announcement: Revisiting Consensus Protocols through Wait-Free Parallelization. In 33rd International Symposium on Distributed Computing (DISC 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 146, pp. 44:1-44:3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@InProceedings{gupta_et_al:LIPIcs.DISC.2019.44,
  author =	{Gupta, Suyash and Hellings, Jelle and Sadoghi, Mohammad},
  title =	{{Brief Announcement: Revisiting Consensus Protocols through Wait-Free Parallelization}},
  booktitle =	{33rd International Symposium on Distributed Computing (DISC 2019)},
  pages =	{44:1--44:3},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-126-9},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{146},
  editor =	{Suomela, Jukka},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.DISC.2019.44},
  URN =		{urn:nbn:de:0030-drops-113514},
  doi =		{10.4230/LIPIcs.DISC.2019.44},
  annote =	{Keywords: Consensus, primary-backup, high-performance, wait-free parallelization}
}
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