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Re: [P2Prg] CORE subgroup problem statement
Hello,
buford at research.panasonic.com wrote:
Further there are various peer-to-peer overlay networks and proposed designs, both unstructured and structured by which large numbers of peers share content and services.
<LC>
From a strict p2p point of view, there are also hybrid architectural flavors, such as BitTorrent. In hybrid frameworks, the centralized component plays a role (not being solely devoted to bootstrap). You know, people out there have used client-server for decades, hence I would be a little pragmatic.
</LC>
<JB>
Yes agree. In fact the P2P overlay survey we posted had hybrid in the taxonomy.
Good point.
</JB>
The taxonomy based on structured, unstructured, and hybrid is focused on
the content localization of P2P.
However, P2P is also about efficient content delivery.
In particular, it is an error to classify BitTorrent as an hybrid
protocol. BitTorrent does not have any content localization feature.
You find your content on a web site. BitTorrent can be possibly
classified, from a content localization point of view,
as centralized.
From my point of view, a better taxonomy for P2P is:
*Content Localization
-Structured
-Unstructured
-Centralized
-Hybrid (?)
*Content delivery
-Parallel download
-File splitting (swarming)
-Piece selection
-Peer selection
This taxonomy must be refined, but at least, it takes into account both
content localization and content delivery.
With this taxonomy, BitTorrent can now be correctly classified:
Content Localization: centralized
Content Delivery: Parallel download, File splitting, rarest first piece
selection, choke algorithm peer selection.
Regards,
Arnaud Legout.
--
Arnaud Legout, Ph.D.
INRIA Sophia Antipolis - Planète Phone : 00.33.4.92.38.78.15
2004 route des lucioles - BP 93 Fax : 00.33.4.92.38.79.78
06902 Sophia Antipolis CEDEX E-mail: arnaud.legout at sophia.inria.fr
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