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    Item type:Publication,
    Web object life measurement using Squid log file
    (2001-01-01) ;
    Intraha, W.
    Web object life was directly and costly derived by directly polling at original Web servers. A new Web object life measurement is proposed using a proxy and cache server log file. Each object-request record is classified into life-related types, Life-Hit, Life-Miss, Life-Unknown or Life-Ignore. An object life is calculated using Life-Hit and Life-Miss's timestamps. This indirect measurement has been analyzed for its error and accuracy. Error and accuracy are better if there are more life-related requests for an object. Squid's access log file is used, and its results codes are mapped to life-related types. All requested object lives are calculated and shown in distribution graphs with average accuracy indicated. © 2001 IEEE.