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Title: Strong and Efficient Consistency with Consistency-Aware Durability
We introduce consistency-aware durability or CAD, a new approach to durability in distributed storage that enables strong consistency while delivering high performance. We demonstrate the efficacy of this approach by designing cross-client monotonic reads, a novel and strong consistency property that provides monotonic reads across failures and sessions in leader-based systems. We build ORCA, a modified version of ZooKeeper that implements CAD and cross-client mono- tonic reads. We experimentally show that ORCA provides strong consistency while closely matching the performance of weakly consistent ZooKeeper. Compared to strongly consistent ZooKeeper, ORCA provides significantly higher through- put (1.8 – 3.3x), and notably reduces latency, sometimes by an order of magnitude in geo-distributed settings.  more » « less
Award ID(s):
1838733
NSF-PAR ID:
10175825
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
USENIX FAST
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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