Starting with the Web A position paper for the W3C Workshop on Web of Services for Enterprise Computing, by Mark Baker of Coactus Consulting. My position For those that might not be aware of my position regarding Web services, I will state it here for clarity. I believe that the Web, since its inception, has always been about services, and therefore that “Web services” are redundant. Worse than th
We don’t get a lot of enjoyment about trampling sacred cows here at Coactus, honest we don’t. But we see so much bad practice out there – more so recently – that we feel compelled to speak out. Today’s sacred cow is document validation, such as is performed by technologies such as DTDs, and more recently XML Schema and RelaxNG. Surprisingly though, we’re not picking on any one particular validatio
A common technique in software development, but particularly in distributed software development, is the “separation of interface from implementation”, whereby software components are developed to have dependencies only upon the interfaces (the connectors, in architectural terms) of other components, and not their implementations. The purpose of this technique is to isolate the impact of a change
Ian Foster, well known Grid Illuminati, wrote an interesting draft paper titled “How do I access state? Let me count the ways” (Google’s cached HTML version) earlier this year (which somehow evaded by radar), that discusses various approaches to handling state in four alternative architectural styles (or parts thereof) vying to be the base style to make the big picture Grid/SOA visions a reality.
In the beginning For much of the first year or two in the life of Web services – and indeed all of their history up to that point – they were about remote procedure calls (RPC); exposing remote APIs across the Internet in order to facilitate machine-to-machine communication and ultimately, business-to-business integration over the Internet. It didn’t take very long however, for Web services propon
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