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    • CAS: Computer Science: Technical Reports
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    • College of Arts and Sciences
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    • CAS: Computer Science: Technical Reports
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    Characteristics of WWW Client-based Traces

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    Date Issued
    1995-07-18
    Author(s)
    Cunha, Carlos R.
    Bestavros, Azer
    Crovella, Mark E.
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    Permanent Link
    https://hdl.handle.net/2144/1571
    Citation (published version)
    Cunha, Carlos; Bestavros, Azer; Crovella, Mark. "Characteristics of WWW Client-based Traces“, Technical Report BUCS-1995-010, Computer Science Department, Boston University, April 1, 1995. [Available from: http://hdl.handle.net/2144/1571]
    Abstract
    The explosion of WWW traffic necessitates an accurate picture of WWW use, and in particular requires a good understanding of client requests for WWW documents. To address this need, we have collected traces of actual executions of NCSA Mosaic, reflecting over half a million user requests for WWW documents. In this paper we describe the methods we used to collect our traces, and the formats of the collected data. Next, we present a descriptive statistical summary of the traces we collected, which identifies a number of trends and reference patterns in WWW use. In particular, we show that many characteristics of WWW use can be modelled using power-law distributions, including the distribution of document sizes, the popularity of documents as a function of size, the distribution of user requests for documents, and the number of references to documents as a function of their overall rank in popularity (Zipf's law). Finally, we show how the power-law distributions derived from our traces can be used to guide system designers interested in caching WWW documents.
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    • CAS: Computer Science: Technical Reports [584]


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