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Designing Distributed Systems Using Approximate Synchrony in Data Center Networks

Authors: 

Dan R. K. Ports, Jialin Li, Vincent Liu, Naveen Kr. Sharma, and Arvind Krishnamurthy, University of Washington
Awarded Best Paper!

Abstract: 

Distributed systems are traditionally designed independently from the underlying network, making worst-case assumptions (e.g., complete asynchrony) about its behavior. However, many of today’s distributed applications are deployed in data centers, where the network is more reliable, predictable, and extensible. In these environments, it is possible to co-design distributed systems with their network layer, and doing so can offer substantial benefits.

This paper explores network-level mechanisms for providing Mostly-Ordered Multicast (MOM): a best-effort ordering property for concurrent multicast operations. Using this primitive, we design Speculative Paxos, a state machine replication protocol that relies on the network to order requests in the normal case. This approach leads to substantial performance benefits: under realistic data center conditions, Speculative Paxos can provide 40% lower latency and 2:6 higher throughput than the standard Paxos protocol. It offers lower latency than a latencyoptimized protocol (Fast Paxos) with the same throughput as a throughput-optimized protocol (batching).

Dan R. K. Ports, University of Washington

Jialin Li, University of Washington

Vincent Liu, University of Washington

Naveen Kr. Sharma, University of Washington

Arvind Krishnamurthy, University of Washington

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BibTeX
@inproceedings {188948,
author = {Dan R. K. Ports and Jialin Li and Vincent Liu and Naveen Kr. Sharma and Arvind Krishnamurthy},
title = {Designing Distributed Systems Using Approximate Synchrony in Data Center Networks},
booktitle = {12th USENIX Symposium on Networked Systems Design and Implementation (NSDI 15)},
year = {2015},
isbn = {978-1-931971-218},
address = {Oakland, CA},
pages = {43--57},
url = {https://www.usenix.org/conference/nsdi15/technical-sessions/presentation/ports},
publisher = {USENIX Association},
month = may,
}
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