NDLI: Load balancing and hot spot relief for hash routing among a collection of proxy caches

Content Provider	IEEE Xplore Digital Library
Author	Kun-Lung Wu Yu, P.S.
Copyright Year	1999
Description	Author affiliation: IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA (Kun-Lung Wu)
Abstract	Hash routing partitions the entire URL space among a collection of cooperating proxy caches. Each partition is assigned to a cache server. Duplication of cache contents is eliminated. Client requests to a cache server for non-assigned partition objects are forwarded to proper sibling caches. As a result, the load level of the cache servers can be quite unbalanced. We examine an adaptable controlled replication (ACR) of non-assigned partition objects in each cache server to reduce the load imbalance and relieve the problem of hot-spot references. Trace-driven simulations are conducted to study the effectiveness of ACR. The results show that: (1) access skew exists, and the load of the cache servers tends to be unbalanced in hash routing; (2) with a relatively small amount of ACR, say 10% of the cache size, significant improvements in load balance can be achieved; and (3) ACR provides a very effective remedy for load imbalance due to hot-spot references.
Starting Page	536
Ending Page	543
File Size	727019
Page Count	8
File Format	PDF
ISBN	0769502229
ISSN	10636927
DOI	10.1109/ICDCS.1999.776556
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-06-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Load management Web server Uniform resource locators Network servers Delay IP networks Routing protocols Aggregates Computational modeling
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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