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RE: Status: D-AG0007 - reliable, stable, predictable evolution

From: Anne Thomas Manes <anne@manes.net>
Date: Thu, 14 Mar 2002 16:46:23 -0500
To: "Damodaran, Suresh" <Suresh_Damodaran@stercomm.com>, "'Hao He'" <Hao.He@thomson.com.au>, <www-ws-arch@w3.org>
Message-ID: <CJEIKEMEBAONGDDNLEKFGEHPDOAA.anne@manes.net>
When we say "reliability, stability, and predictable evolution of web
services" are we talking about the services themselves or the technology
used to implement them, or perhaps the standards underneath the technology?
Perhaps we need to say, "reliability, stability, and predictable evolution
of web services technology" or "reliability, stability, and predictable
evolution of web services standards"?

Anne

> -----Original Message-----
> From: www-ws-arch-request@w3.org [mailto:www-ws-arch-request@w3.org]On
> Behalf Of Damodaran, Suresh
> Sent: Thursday, March 14, 2002 11:08 AM
> To: 'Hao He'; www-ws-arch@w3.org
> Subject: RE: Status: D-AG0007 - reliable, stable, predictable evolution
>
>
> Hao,
>
> -----Original Message-----
> From: Hao He [mailto:Hao.He@thomson.com.au]
> Sent: Wednesday, March 13, 2002 6:32 PM
> To: Damodaran, Suresh; www-ws-arch@w3.org
> Subject: RE: Status: D-AG0007 - reliable, stable, predictable evolution
>
>
> I belive that the "Reliability, stability, and predictable
> evolution of web
> services" are more important and useful than those of the reference
> architecture, so we should add it as a goal.
> <sd>
> I generally agree. I am unsure of what "stable webservice" means, though.
> What is it to you, and how is it different from "reliable web service?"
> </sd>
>
> It might also be desirable if a web service can be easily evaluated from
> consumers' point of view. This would allow 'natual selections' on
> competing
> service providers and service implementations.
> Should this be a non-goal or part of the new goal?
>
> <sd>
> It would make sense to add this as a goal if web services world is seen
> as an ecology, where Darwinian selections may occur. (I have visions of
> striped web services lengthening their neck and becoming tall web
> services:-)
>
> Seriously, how would you word the goal statement?
> "architecture has the goal of enabling selection of web services"
> Note that the implications are profound - just as an example,
> discovery of web services will immediately come under the scope of WS-A.
>
> Cheers,
> -Suresh
> </sd>
>
> Regards,
> Hao
>
> -----Original Message-----
> From: Damodaran, Suresh [mailto:Suresh_Damodaran@stercomm.com]
> Sent: Thursday, March 14, 2002 10:48 AM
> To: www-ws-arch@w3.org
> Subject: Status: D-AG0007 - reliable, stable, predictable evolution
>
>
> Goal:
>     Goal statement "To develop a standard reference architecture for web
> services that is reliable, and stable, and whose evolution is predictable
> over time"  This goal has not been revised, and thus, stands.
>     "Reliability, stability, and predictable evolution of web services" is
> noted in [1] as a non-goal, and perhaps
>     should be added to our goals.
>
> A proposal was submitted to the WG [1], and was evaluated. The proposal
> included measures that
> can be taken by WS-A to address reliability, stability, and predictable
> evolution through the formation
> of C-sets, or "consistent sets" of standards within WS framework.
>     A question was raised whether C-sets could stall predictable evolution
> [3].
>     Similar question was posed in [2] in terms of extension.
>     Ensuring "backward compatibility" of individual standards could
> potentially address this issue [4]. This will also address the
> "principle of
> partial understanding" in [5].
>
> For other questions and responses, please refer to the mails directly.
>
> Further, I was referred to [5] as a possible important source. If anybody
> has any other source,
> please send them to me. A new rev of the proposal will be made later in
> light of the comments and [5].
> Date TBD.
>
> Regards,
> -Suresh
>
>
> [1] http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0148.html
> <http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0148.html>
> [2] http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0158.html
> <http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0158.html>
> [3] http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0180.html
> <http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0180.html>
> [4] http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0234.html
> <http://lists.w3.org/Archives/Public/www-ws-arch/2002Mar/0234.html>
> [5]  <http://www.w3.org/DesignIssues/Evolution.html>
> http://www.w3.org/DesignIssues/Evolution.html
>
>
>
Received on Thursday, 14 March 2002 16:46:29 GMT

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