Thank You Gartner - Event Processing Conference #1 In the Books

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Thank You Gartner - Event Processing Conference #1 In the Books

John Trigg
Tue, 25 Sep 2007 10:50:24 -0500
Between September 19th and 21st,Gartner held its first conference on Complex Event Processing and BusinessActivity Monitoring in Orlando, Florida. Some 200 people(by my estimation) came together to meet others interested in thesetechnologies, as well as see and hear presentations from a range ofGartner analysts, CEP vendors, educators and thought leaders, and mostimportantly users of CEP. The conference was bookended by impressivepresentations from Roy Schulte and Bill Gassman on Day One settingout the current state of the CEP and BAM market, and by Dr David Luckham whoclosed the conference with a thoughtful and insightful look at the future ofCEP.

We’ll blog entries about different aspects of the conferenceover the coming days and weeks. But for now it is important to stress howvital the timing of this conference was and how its attendees have shown thatthe principles of CEP are beginning to take hold in a wide array of industriesand solutions. Between the 3 conference tracks organized by Gartner(Event Processing, Business Activity Monitoring and Event Processing in Bankingand Capital Markets) and the vendor sponsored sessions, we heard descriptionsof applications of CEP in a variety of scenarios ranging from algo trading toclickstream analysis to content distribution to manufacturing and many more.

Architectural presentations were also prevalent with manysound ideas being put forward on the relationship between the ever evolvingalphabet soup of CEP, BAM, SOA, EDA, BPM, OLTP, ESB and I am sure, manyothers. Bringing together an audience such as this to discuss bothpractical implementations and more theoretical research allows insight toflow around the CEP community and to understand the ramifications for when CEPis seen as more than just event feeds and event processing speeds. For true application infrastructures to be built on the principles andtechnologies of CEP, a wide understanding of how we can evolve therelationships between these disciplines will be key. And thatunderstanding will come from the continued holding of conferences such as thisone (already looking forward to next year in
New York) and interplay between the manydisciplines, vendors and consumers of these technologies.

Dr Luckham posited that CEP will become a ubiquitousinfrastructure technology in some 30 years. For that to be true -indeed for it to happen sooner - we all have a lot of work to put in … but youcan be sure that it will be worth it.

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Test Your Knowledge in Computers #360
Difficulty: Medium
The find command first appeared in Version 4 AT&T UNIX.
True or False?
dat_evd_free(3DAT)				     Direct Access Transport Library Functions					dat_evd_free(3DAT)

dat_evd_free - destroy an instance of the Event Dispatcher SYNOPSIS
cc [ flag... ] file... -ldat [ library... ] #include <dat/udat.h> DAT_RETURN dat_evd_free ( IN DAT_EVD_HANDLE evd_handle ) PARAMETERS
evd_handle Handle for an instance of the Event Dispatcher. DESCRIPTION
The dat_evd_free() function destroys a specified instance of the Event Dispatcher. All events on the queue of the specified Event Dispatcher are lost. The destruction of the Event Dispatcher instance does not have any effect on any DAT Objects that originated an Event Stream that had fed events to the Event Dispatcher instance. There should be no event streams feeding the Event Dispatcher and no threads blocked on the Event Dispatcher when the EVD is being closed as at the time when it was created. Use of the handle of the destroyed Event Dispatcher in any consequent operation fails. RETURN VALUES
DAT_SUCCESS The operation was successful. DAT_INVALID_HANDLE The evd_handle parameter is invalid DAT_INVALID_STATE Invalid parameter. There are Event Streams associated with the Event Dispatcher feeding it. USAGE
Consumers are advised to destroy all Objects that originate Event Streams that feed an instance of the Event Dispatcher before destroying it. An exception to this rule is Event Dispatchers of an IA. Freeing an IA automatically destroys all Objects associated with it directly and indirectly, including Event Dispatchers. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard: uDAPL, 1.1, 1.2 | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
libdat(3LIB), attributes(5) SunOS 5.10 16 Jul 2004 dat_evd_free(3DAT)

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