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Re: Microsoft buys XDegress - more of a p2p/distributed data thing...
From fork-admin@xent.com  Wed Sep 11 13:49:38 2002

Mr. FoRK writes:
> "Files can be cached on multiple systems randomly scattered around the
> Internet, as with Napster or Freenet. In fact, the caching in XDegrees is
> more sophisticated than it is on those systems: users with high bandwidth
> connections can download portions, or "stripes," of a file from several
> cached locations simultaneously. The XDegrees software then reassembles
> these stripes into the whole file and uses digital signatures to verify that
> the downloaded file is the same as the original. A key component of this
> digital signature is a digest of the file, which is stored as an HTTP header
> for the file."
This "more sophisticated than [Napster or Freenet]" part seems
to be the same behavior implemented in many other P2P CDNs,
such as:
- Kazaa
- EDonkey/Overnet
- BitTorrent
- Gnutella (with HUGE extensions)
- OnionNetworks WebRAID
...though the quality of the "digest" used by each system varies
wildly.
- Gordon

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From fork-admin@xent.com  Wed Sep 11 14:10:33 2002