NDLI: Building topology-aware overlays using global soft-state

Content Provider	IEEE Xplore Digital Library
Author	Zhichen Xu Chunqiang Tang Zheng Zhang
Copyright Year	2002
Abstract	Distributed hash table (DHT) based overlay networks offer an administration-free and fault-tolerant storage space that maps "keys" to "values". For these systems to function efficiently, their structures must fit that of the underlying network. Existing techniques for discovering network proximity information, such as landmark clustering and expanding-ring search are either inaccurate or expensive. The lack of global proximity information in overlay construction and maintenance can result in bad proximity approximation or excessive communication. To address these problems, we propose the following: (1) Combining landmark clustering and round-trip time (RTT) measurements to generate proximity information, achieving both efficiency and accuracy. (2) Controlled placement of global proximity information on the system itself as soft-state, such that nodes can independently access relevant information efficiently. (3) Publish/subscribe functionality that allows nodes to subscribe to the relevant soft-state and get notified as the state changes necessitate overlay restructuring.
Sponsorship	IEEE Comput. Soc
Starting Page	500
Ending Page	508
File Size	341544
Page Count	9
File Format	PDF
ISBN	0769519202
ISSN	10636927
DOI	10.1109/ICDCS.2003.1203500
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing Network topology Internet Buildings Fault tolerance Time measurement Communication system control Control systems Fault tolerant systems Extraterrestrial measurements
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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