Beauty Is in the Eye of the Beholder
Alex Papadimoulis discusses ugly code, where it comes from, how to avoid it, and how to get rid of it.
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Although a subscriber list is not explicitly maintained for the poll solution, enterprise security considerations will force you to create a list of allowed consumers. Of course, authentication and authorization of those consumers must also occur. The end result, for all intents and purposes, is a subscriber list.
This does not in any way take away from the greater point the presenter makes which is that the "consumer poll" approach is fundamentally different from the "enterprise service bus" approach, and in many cases represents a simple, efficient, and cost effective alternative.
At Lucid, we have created an open source processing framework call Hannibal that promotes many of the values addressed in this presentation. If you are interested feel free to download it here:
code.google.com/p/hannibalcodegenerator/
Bediako George
lucidtechnics.com
even without security issues, the end result is always a list; the interesting point is to find a way to delegate it.
Maybe you can also delegate security stuff also to other components:
- putting applications in a secured area, so they can trust each other through anonymous calls;
- or connecting applications to a common security system managing application identities and roles, and simply requiring a given role at the publisher level.
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