NDLI: Routing indices for peer-to-peer systems

Content Provider	IEEE Xplore Digital Library
Author	Crespo, A. Garcia-Molina, H.
Copyright Year	2002
Description	Author affiliation: Stanford Univ., CA, USA (Crespo, A.; Garcia-Molina, H.)
Abstract	Finding information in a peer-to-peer system currently requires either a costly and vulnerable central index, or flooding the network with queries. We introduce the concept of routing indices (RIs), which allow nodes to forward queries to neighbors that are more likely to have answers. If a node cannot answer a query, it forwards the query to a subset of its neighbors, based on its local RI, rather than by selecting neighbors at random or by flooding the network by forwarding the query to all neighbors. We present three RI schemes: the compound, the hop-count, and the exponential routing indices. We evaluate their performance via simulations, and find that RIs can improve performance by one or two orders of magnitude vs. a flooding-based system, and by up to 100% vs. a random forwarding system. We also discuss the tradeoffs between the different RI schemes and highlight the effects of key design variables on system performance.
Sponsorship	IEEE Comput. Tech. Committee on Distributed Process. (TCDP)
Starting Page	23
Ending Page	32
File Size	380716
Page Count	10
File Format	PDF
ISBN	0769515851
ISSN	10636927
DOI	10.1109/ICDCS.2002.1022239
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-07-02
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing Peer to peer computing System performance Distributed computing Robustness Costs Web search Search engines Computer hacking
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

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