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Handling Information Overload on Usenet : Advanced Caching Methods for News

Ingvoldstad, Jan
Master thesis
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thesis.pdf (748.7Kb)
Year
2001
Permanent link
http://urn.nb.no/URN:NBN:no-4664

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  • Institutt for informatikk [3586]
Abstract
Usenet is the name of a world wide network of servers for group

communication between people. From 1979 and onwards, it has seen a

near exponential growth in the amount of data transported, which has

been a strain on bandwidth and storage. There has been a wide range

of academic research with focus on the WWW, but Usenet has been

neglected. Instead, Usenet's evolution has been dominated by

practical solutions.

This thesis describes the history of Usenet in a growth perspective,

and introduces methods for collection and analysis of statistical

data for testing the usefulness of various caching strategies. A

set of different caching strategies are proposed and examined in

light of bandwidth and storage demands as well as user perceived

performance.

I have shown that advanced caching methods for news offers relief

for reading servers' storage and bandwidth capacity by exploiting

usage patterns for fetching or pre\-fetching articles the users may

want to read, but it will not solve the problem of near exponential

growth nor the problems of Usenet's backbone peers.
 
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