Electrical Engineering
      and Computer Sciences

Electrical Engineering and Computer Sciences

COLLEGE OF ENGINEERING

UC Berkeley

Key Consistency in DHTs

Sriram Sankararaman, Byung-Gon Chun, Chawathe Yatin and Scott Shenker

EECS Department
University of California, Berkeley
Technical Report No. UCB/EECS-2005-21
November 29, 2005

http://www.eecs.berkeley.edu/Pubs/TechRpts/2005/EECS-2005-21.pdf

Most DHTs are designed more for scalability than for consistency, and thus do not provide strong guarantees on the consistency of data. In this paper, we focus on key consistency rather than data consistency: key consistency requires that no key be owned by more than one root. We briefly show how key consistency can be used to support atomic DHT operations and then propose a mechanism to achieve key-consistency. We have tested our algorithm through simulation and a Planetlab deployment, and find that it provides high availability in the face of node churn and packet drops.


BibTeX citation:

@techreport{Sankararaman:EECS-2005-21,
    Author = {Sankararaman, Sriram and Chun, Byung-Gon and Yatin, Chawathe and Shenker, Scott},
    Title = {Key Consistency in DHTs},
    Institution = {EECS Department, University of California, Berkeley},
    Year = {2005},
    Month = {Nov},
    URL = {http://www.eecs.berkeley.edu/Pubs/TechRpts/2005/EECS-2005-21.html},
    Number = {UCB/EECS-2005-21},
    Abstract = {Most DHTs are designed more for scalability than for consistency, and thus do not provide strong guarantees on the consistency of data.  In this paper, we focus on key consistency rather than data consistency: key consistency requires that no key be owned by more than one root. We briefly show how key consistency can be used to support atomic DHT operations and then propose a mechanism to achieve key-consistency. We have tested our algorithm through simulation and a Planetlab deployment, and find that it provides high availability in the face of node churn and packet drops.}
}

EndNote citation:

%0 Report
%A Sankararaman, Sriram
%A Chun, Byung-Gon
%A Yatin, Chawathe
%A Shenker, Scott
%T Key Consistency in DHTs
%I EECS Department, University of California, Berkeley
%D 2005
%8 November 29
%@ UCB/EECS-2005-21
%U http://www.eecs.berkeley.edu/Pubs/TechRpts/2005/EECS-2005-21.html
%F Sankararaman:EECS-2005-21