December 2001
Intermediate to advanced
400 pages
12h 2m
English
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6.7. Other Observations
Among the many other characteristics relevant to Web caching and replication is the burstiness of Web traffic, which affects many aspects of designing a scalable Web platform.
Gribble and Brewer [1997] measured the request rate generated by 8,000 dial-up clients. They observed that the request rate is quite bursty when measured in seconds but smoothes out at time scales of minutes and higher. On the other hand, Crovella and Bestavros [1995; 1996], by considering aggregate Web traffic (as measured in downloaded bytes) from 37 client workstations, found traffic burstiness over a wide range of time scales, even at 1,000-second intervals. Such traffic behavior can be described as self-similar, where self-similarity refers ...