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Title: Granular Synchrony
Today’s mainstream network timing models for distributed computing are synchrony, partial synchrony, and asynchrony. These models are coarse-grained and often make either too strong or too weak assumptions about the network. This paper introduces a new timing model called granular synchrony that models the network as a mixture of synchronous, partially synchronous, and asynchronous communication links. The new model is not only theoretically interesting but also more representative of real-world networks. It also serves as a unifying framework where current mainstream models are its special cases. We present necessary and sufficient conditions for solving crash and Byzantine fault-tolerant consensus in granular synchrony. Interestingly, consensus among n parties can be achieved against f ≥ n/2 crash faults or f ≥ n/3 Byzantine faults without resorting to full synchrony.  more » « less
Award ID(s):
2143058
PAR ID:
10575383
Author(s) / Creator(s):
; ; ; ;
Editor(s):
Alistarh, Dan
Publisher / Repository:
Schloss Dagstuhl
Date Published:
ISSN:
1868-8969
ISBN:
978-3-95977-352-2
Subject(s) / Keyword(s):
Timing model synchrony asynchrony consensus blockchain fault tolerance
Format(s):
Medium: X Size: 22 pages; 893932 bytes Other: application/pdf
Size(s):
22 pages 893932 bytes
Right(s):
Creative Commons Attribution 4.0 International license; info:eu-repo/semantics/openAccess
Sponsoring Org:
National Science Foundation
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