To: | "Service-Oriented Architecture CoP" <soa-forum@xxxxxxxxxxxxxx> |
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From: | "Sam Chance" <sgchance@xxxxxxxxx> |
Date: | Wed, 3 Oct 2007 21:13:22 -0400 |
Message-id: | <e736790710031813h52501590ncab58c27ad13e411@xxxxxxxxxxxxxx> |
It seems to me that EDA is largely a "polling" or "monitoring" activity in the popularized manifestation of SOA (i.e. SOAP, WSDL/REST, UDDI). That is to say, the events are largely based on checking and re-checking static, location dependent services. It seems inefficient and not scalable; and, therefore, perhaps not prevalent.
On the other hand, SOA implementations that implement dynamic services managed by dynamic infrastructures enjoy the ability to also leverage [distributed] event models inherent to the service infrastructures. A consequent robust event model can greatly enhance our ability to *manage* the services themselves and to realize more scale, adaptability and agility - at runtime. There's another realm of event processing that is bringing tremendous utility to business analysts. Some call it "Complex Event Processing (CEP) for Humans". CEP is being leveraged to correlate events across sources and time - even non-events. Applications of this sort monitor (and/or listen to) myriad sources ( e.g. sensors, databases, feeds, etc.) The more dynamic the constituent parts of the architecture become, the more proactive and resilient the various functions become that interact with the parts. Additionally, EDA becomes more of a "listening" or "push" activity. This will help reduce "noise" and bandwidth consumption, and will enable more intelligent systems. I guess the net of my thoughts is that EDA becomes more apparent, relevant and prominent as SOA implementations become more dynamic. Thank you! Sam On 10/3/07,
Ken Laskey <klaskey@xxxxxxxxx> wrote:
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