12.5. Nontransparent Prefetching
As mentioned in Section 12.3, there are two aspects in transparent prefetching: user transparency and server transparency. User transparency refers to a lack of user input to the prefetching process. Server transparency refers to a lack of cooperation from the origin server side. A prefetching mechanism can either be fully transparent or rely on cooperation from the user and/or the servers.
12.5.1. User Nontransparency
Two prominent commercial products, PeakJet2000 and NetAccelerator, run on browser machines. Both are server-transparent but allow optional user input to guide prefetching (thus, they can be user nontransparent). Both products will prefetch all the hyperlinks in any object that is fetched on demand. ...
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