NDLI: Elastic Routing Table with Provable Performance for Congestion Control in DHT Networks

Content Provider	IEEE Xplore Digital Library
Author	Haiying Shen Cheng-Zhong Xu
Copyright Year	2006
Description	Author affiliation: Wayne State University, Detroit, MI (Haiying Shen)
Abstract	Distributed hash table (DHT) networks based on consistent hashing functions have an inherent load balancing problem. The problem becomes more severe due to the heterogeneity of network nodes and the non-uniform and timevarying file popularity. Existing DHT load balancing algorithms are mainly focused on the issues caused by node heterogeneity. To deal with skewed lookups, this paper presents an elastic routing table (ERT) mechanism for query load balancing, based on the observation that high degree nodes tend to experience more traffic load. The mechanism allows each node to have a routing table of variable size corresponding to its capacity. The indegree and outdegree of the routing table can also be adjusted dynamically in response to the change of file popularity and network churn. Theoretical analysis proves the routing table degree is bounded. The ERT mechanism facilitates locality-aware randomized query forwarding to further improve lookup efficiency. By relating query forwarding to a supermarket customer service model, we prove a 2-way randomized query forwarding policy leads to an exponential improvement in query processing time over random walking. Simulation results demonstrate the effectiveness of the ERT mechanism and its related query forwarding policy for congestion and query load balancing. In comparison with the existing "virtual-server"-based load balancing algorithm and other routing table control approaches, the ERT-based congestion control protocol yields significant improvements in query lookup efficiency.
Starting Page	15
Ending Page	15
File Size	314392
Page Count	1
File Format	PDF
ISBN	0769525407
ISSN	10636927
DOI	10.1109/ICDCS.2006.35
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-04
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing Intelligent networks Peer to peer computing Load management Query processing Intrusion detection Computer networks Distributed computing Telecommunication traffic Customer service
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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