Blogarithms
Doug Kaye's thoughts on web services, web hosting and managed services.
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Loose Coupling, Continued. Gordon Weakliem asks, "I wonder if it's fair to say that loosely coupled systems trade design and development time performance for runtime performance."
I think it's more a question of granularity. When you have lots of low-level, closely coupled, RPC-style interactions, performance can be a real issue. When services exchange larger self-describing documents asynchronously, there's actually less overhead. We worry about the performance of XML parsers when we use RPC-style APIs because there are so many individual messages to parse. SOAP looks like a pretty clunky way to move small amounts of information, hence REST or XML-RPC. When moving coarser-grained documents, SOAP and XML account for a smaller percentage of the overall required processing power and bandwidth utilization.
Posted Wednesday, December 04, 2002 8:46:03 PM 
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Merrill Lynch Is Bullish on Web Services. Not on the investment side, but, "We see huge potential in Web services, both in terms of re-engineering our overall cost structure and, just as importantly, in allowing us to deliver differentiated services to our clients. WS-I represents a vendor agnostic forum to champion our needs, and we're excited to be a member," said John McKinley, executive vice president and chief technology officer of Merrill Lynch. [Source: internetnews.com]
Posted Wednesday, December 04, 2002 5:46:26 PM
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