Unobtrusive Deferred Update Stabilization for Efficient Geo-Replication

Authors: 

Chathuri Gunawardhana, Manuel Bravo, and Luis Rodrigues, University of Lisbon

Abstract: 

In this paper, we propose a novel approach to manage the throughput vs visibility latency tradeoff that emerges when enforcing causal consistency in geo-replicated systems. Our approach consists in allowing full concurrency when processing local updates and using a deferred local serialisation procedure before shipping updates to remote datacenters. This strategy allows to implement inexpensive mechanisms to ensure system consistency requirements while avoiding intrusive effects on update operations, a major performance limitation of previous systems. We have implemented our approach as a variant of Riak KV. Our evaluation shows that we outperform sequencer-based approaches by almost an order of magnitude in the maximum achievable throughput. Furthermore, unlike previous sequencer-free solutions, our approach reaches nearly optimal remote update visibility latencies without limiting throughput.

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BibTeX
@inproceedings {203175,
author = {Chathuri Gunawardhana and Manuel Bravo and Lu{\'\i}s Rodrigues},
title = {Unobtrusive Deferred Update Stabilization for Efficient Geo-Replication},
booktitle = {2017 {USENIX} Annual Technical Conference ({USENIX} {ATC} 17)},
year = {2017},
isbn = {978-1-931971-38-6},
address = {Santa Clara, CA},
pages = {83--95},
url = {https://www.usenix.org/conference/atc17/technical-sessions/presentation/gunawardhana},
publisher = {{USENIX} Association},
month = jul,
}

Presentation Audio