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I thought so - but then was not quite sure if a solution akin to the web
load balancing/fail-over is a better one, or giving individual control to
the customers is a better one. The advantage with current way (of providing
load-balancing / fail-over at the network service provider or perimeter) is
that it is already in place, at least for those people with high content and
visits. However, I am sure that Orgs with high-content web requests are not
the ones who need to provide highly reliable web services (at least not
1-1), so others would need different solutions. And, probably, making the
choices part of the WSDL, or a dynamic retrieval of those choices from a
UDDI repository (basically a standards-based way) would be a good idea.
I will take a look at WSRP.
Thanks,
Seetharama
-----Original Message-----
From: Rex Brooks [mailto:rexb@starbourne.com]
Sent: Monday, August 30, 2004 7:17 AM
To: Chiusano Joseph; Seetharama Rao Durbha
Cc: xml-dev@lists.xml.org
Subject: Re: [xml-dev] Fault-tolerance in web services
Indeed, not naive at all. Load balancing and
scalability issues are here already in WSRP, and
will need to be taken into account by IT
architects as they begin to fashion portal-based
IT solutions end to end of an enterprise.
Although heterogeneous environments can be
accommodated, the tier of largest companies will
almost certainly need to rethink IT strategies in
terms of investing in the most efficient and
scalable systems. That is going to be more
efficient with systems designed to scale from day
one AND work with more heterogeneous partners.
Not easy. Not simple.
Ciao,
Rex
At 3:51 PM -0400 8/30/04, Chiusano Joseph wrote:
>That doesn't seem at all like a naïve question, especially since your
>additional information is right on the mark. The situation you imagine
>is - I am certain - often done in practice, by offering a service at
>multiple addresses.
>
>Kind Regards,
>Joe Chiusano
>Booz Allen Hamilton
>Strategy and Technology Consultants to the World
>
>Seetharama Rao Durbha wrote:
>>
>> Just a naïve question - fault tolerance in web services - for example,
>> providing multiple service/soap:address - should that be part of a
WSDL/SOAP
>> client functionality, or should that be a native support provided by the
>> provider?
>>
>> I can imagine situation where services are multi-hosted and a particular
>> provider would like to be able to explicitly identify those locations to
the
>> clients, in case one fails, or even for load-balancing, if that is a
>> concern.
>>
>> Thanks,
>> Seetharama Rao Durbha
>> Cell : 510-673-1843
>> Office : 510-742-4228
>>
>> -----------------------------------------------------------------
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>--
>Kind Regards,
>Joseph Chiusano
>Associate
>Booz Allen Hamilton
>
>-----------------------------------------------------------------
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--
Rex Brooks
GeoAddress: 1361-A Addison, Berkeley, CA, 94702 USA, Earth
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Email: rexb@starbourne.com
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