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Downward Dependency

Kevin Rutherford: "These associations cause me to believe that the things at the bottom of the pile are hard to move or change. Whereas in the hexagonal view I instinctively feel the system's components are more loosely coupled - perhaps because they are associated only by proximity, and not by gravity."

Cool insight on layered architecture diagrams. In Propylon we tend to diagram SOAs using rings. I saw a guy once draw an SOA as a layered stack - with the messaging substrate and TCP/IP stuff on top. I thought I was going to fall onto the ceiling or something.

March 8, 2006 12:46 AM


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