Mixing Consistency in Geodistributed Transactions: Technical Report
Loading...
Files
No Access Until
Permanent Link(s)
Other Titles
Authors
Abstract
Weakly consistent data stores have become popular because they enable highly available, scalable distributed applications. However, some data needs strong consistency. For applications that mix accesses to strongly and weakly consistent data, programmers must currently choose between bad performance and possible data corruption. We instead introduce a safe mixed-consistency programming model in which programmers choose the consistency level on a per-object basis. Further, they can use atomic, isolated transactions to access both strongly consistent (e.g., linearizable) data and weakly consistent (e.g., causally consistent) data within the same transaction. Compile-time checking ensures that mixing consistency levels is safe: the guarantees of each object's consistency level are enforced. Programmers avoid being locked into one consistency level; they can make an application-specific tradeoff between performance and consistency. We have implemented this programming model as part of a new system called MyriaStore. MyriaStore demonstrates that safe mixed consistency can be implemented on top of off-the-shelf data stores with their own native, distinct consistency guarantees. Our performance measurements demonstrate that significant performance improvements can be obtained for geodistributed applications that need strong consistency for some critical operations but that also need the high performance and low latency possible with causally consistent data.
Journal / Series
Volume & Issue
Description
Sponsorship
This research was conducted with government support under and awarded by DoD, Air Force Office of Scientific Research, National Defense Science and Engineering Graduate (NDSEG) Fellowship, 32 CFR 168a and by National Science Foundation grant CCF-0964409.
Date Issued
2016-10-07
Publisher
Keywords
consistency; transactions; distributed systems; georeplication
Location
Effective Date
Expiration Date
Sector
Employer
Union
Union Local
NAICS
Number of Workers
Committee Chair
Committee Co-Chair
Committee Member
Degree Discipline
Degree Name
Degree Level
Related Version
Related DOI
Related To
Related Part
Based on Related Item
Has Other Format(s)
Part of Related Item
Related To
Related Publication(s)
Link(s) to Related Publication(s)
References
Link(s) to Reference(s)
Previously Published As
Government Document
ISBN
ISMN
ISSN
Other Identifiers
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International
Types
technical report