The founding Fathers of the United States understood all too well the importance of complex events when on July 4th, 1776 they wrote:
"When in the course of human events it becomes necessary for one people to...etcetera, etcetera, and etcetera".
Similarly, many of today's business and IT leaders understand the importance of reacting to business events as they occur in real-time and how that can dramatically change the performance and agility of their business.
Event processing, often called “complex event processing” (CEP) is a hot new enterprise middleware category. CEP answers the question: “What is happening right now in our business”? Sometimes the answer is as simple as ordering more products when the inventory dips below safety stock, but often it involves recognizing patterns of business events that foretell critical business situations that require immediate action.
CEP platforms analyse streams of data as they flow from live sources such as transaction flows, click streams, market data feeds, and myriad other sources of data swirling around inside a business environment. The platforms then prompt either downstream applications or people to react to the information by resetting processing priorities, changing online sales strategies, buying and selling stocks, or performing some other action.
The Forrester Wave™: Complex Event Processing (CEP) Platforms, Q3 2009
Mike Gualtieri and John Rymer evaluated nine complex event processing (CEP) platforms using 114 criteria. Please see the complete results of the evaluation in August 4, 2009 The Forrester Wave: Complex Event Processing Platforms report. The products included in the Wave evaluation include: