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DR 810 (QoS)

From: Yves Lafon <ylafon@w3.org>
Date: Fri, 17 Nov 2000 15:07:00 +0100 (MET)
To: <xml-dist-app@w3.org>
Message-ID: <Pine.SOL.4.30.0011152155280.10506-100000@tarantula.inria.fr>
Here is a small use case for QoS,
* Customer C registered from his cable company to be notified when program
X is aired. C's VCR will automatically starts as soon as the cable company
send the notification. If the nofication arrives too late, it's exactly as
if didn't reach C's VCR as the beginning of the show will be missing
anyway.

* ISP Z is doing mirroring on different planets by push, everytime a
document is edited on the main server, notifications are sent to the
mirrors on jupiter, mars and pluto.

C is interested with fast delivery of the XP message, while Z wants the
notification to ends up to the mirror even if it takes some time.

So depending on what you prefer (fast delivery with possible loss or
delivery regardless of the path/time/cost), the XP message should be
routed directly using the underlying transport protocol between
intermediaries.

Intelligent gateways can take the right actions depending on QoS
requirements of the message (ex choosing the right transport).
(See also DR805)


-- 
Yves Lafon - W3C / Jigsaw - XML Protocol - HTTP
"Baroula que barouleras, au tiéu toujou t'entourneras."
Received on Friday, 17 November 2000 09:07:08 GMT

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