101 lines
3.8 KiB
Plaintext
101 lines
3.8 KiB
Plaintext
From fork-admin@xent.com Wed Sep 11 19:42:11 2002
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<fork@xent.com>; Wed, 11 Sep 2002 08:37:54 -0700 (PDT)
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From: "Jim Whitehead" <ejw@cse.ucsc.edu>
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To: <fork@example.com>
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Subject: RE: Microsoft buys XDegress - more of a p2p/distributed data thing...
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Date: Wed, 11 Sep 2002 08:35:31 -0700
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XDegrees was at the WebDAV Interoperability Testing Event last year, so
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there may be some DAV under the hood there someplace.
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- Jim
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> -----Original Message-----
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> From: fork-admin@xent.com [mailto:fork-admin@xent.com]On Behalf Of
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> Gordon Mohr
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> Sent: Wednesday, September 11, 2002 12:00 AM
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> To: fork@example.com
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> Subject: Re: Microsoft buys XDegress - more of a p2p/distributed data
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> thing...
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>
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>
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> Mr. FoRK writes:
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> > "Files can be cached on multiple systems randomly scattered around the
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> > Internet, as with Napster or Freenet. In fact, the caching in
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> XDegrees is
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> > more sophisticated than it is on those systems: users with high
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> bandwidth
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> > connections can download portions, or "stripes," of a file from several
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> > cached locations simultaneously. The XDegrees software then reassembles
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> > these stripes into the whole file and uses digital signatures
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> to verify that
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> > the downloaded file is the same as the original. A key component of this
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> > digital signature is a digest of the file, which is stored as
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> an HTTP header
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> > for the file."
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>
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> This "more sophisticated than [Napster or Freenet]" part seems
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> to be the same behavior implemented in many other P2P CDNs,
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> such as:
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>
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> - Kazaa
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> - EDonkey/Overnet
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> - BitTorrent
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> - Gnutella (with HUGE extensions)
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> - OnionNetworks WebRAID
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>
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> ...though the quality of the "digest" used by each system varies
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> wildly.
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>
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> - Gordon
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>
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