Khazana: a flexible wide area data store

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Publication Type technical report
School or College College of Engineering
Department Computing, School of
Program Advanced Research Projects Agency
Creator Susarla, Sai R.; Carter, John
Title Khazana: a flexible wide area data store
Date 2003-10-13
Description Khazana is a peer-to-peer data service that supports efficient sharing and aggressive caching of mutable data across the wide area while giving clients significant control over replica divergence. Previous work on wide-area replicated services focussed on at most two of the following three properties: aggressive replication, customizable consistency, and generality. In contrast, Khazana provides scalable support for large numbers of replicas while giving applications considerable flexibility in trading off consistency for availability and performance. Its flexibility enables applications to effectively exploit inherent data locality while meeting consistency needs. Khazana exports a file system-like interface with a small set of consistency controls which can be combined to yield a broad spectrum of consistency flavors ranging from strong consistency to best-effort eventual consistency. Khazana servers form failure-resilient dynamic replica hierarchies to manage replicas across variable quality network links. In this report, we outline Khazana?s design and show how its flexibility enables three diverse network services built on top of it to meet their individual consistency and performance needs: (i) a wide-area replicated file system that supports serializable writes as well as traditional file sharing across wide area, (ii) an enterprise data service that exploits locality by caching enterprise data closer to end-users while ensuring strong consistency for data integrity, and (iii) a replicated database that reaps order of magnitude gains in throughput by relaxing consistency.
Type Text
Publisher University of Utah
Subject Khazana; Peer-to-peer data service
Subject LCSH Distributed shared memory
Language eng
Bibliographic Citation Susarla, Sai R.; Carter, John (2003). Khazana: a flexible wide area data store. UUCS-03-020.
Series University of Utah Computer Science Technical Report
Relation is Part of ARPANET
Rights Management ©University of Utah
Format Medium application/pdf
Format Extent 638,571 bytes
Source University of Utah School of Computing
ARK ark:/87278/s6p565s3
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2015-04-23
ID 704061
Reference URL
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