We have just switched to the new format CEP website. You will notice that (as of time of writing) the website is not displaying correctly. We are in the...
Hi, When developing software, people can use UML diagrams together with an OA/D process to derive classes etc., but what about modeling of events? For example,...
I am new to this group, and just thought I'd pass along this post from analyst, Robin Bloor on ESP and StreamBase. Evidently Bloor is doing a webinar on the...
The open-source Esper engine for Java ESP and CEP applications has released an alpha version 0.7.5 with some important new features, such as outer joins...
Several places on the Web, including this list, have featured interesting discussions on what makes a CEP application, and consequently what features are ...
Hi group, A time ago I read a working draft of a paper "RuleML Reaction Rules Requirements 1.0". Are anyone working on this paper or the topic anymore? I also...
Folks - Below is snippet from article that talks about Apama acquistion by Progress. I can clearly understand the value of ESP/CEP in financial world where...
Naren – Many types of enterprise could gain benefits from plugging CEP into their ESB, especially if they're responsible for saving lives or securing...
One use of CEP, one that everyone who is a customer at a Big Corporation would like to have in place, is to detect when you are not really taking care of your...
My *impression* is that one would look to ESP/CEP systems for scenarios with large, fast data volumes and relatively simple business rules. The complexity...
... system ... It's usually a bit tricky to release a categorization table that pleases everybody, but would the below table be useful for categorizing...
Yes - this makes sense. Thanks, Bruce. --Naren bzolsen <Bruce.Olsen@...> wrote: Naren – Many types of enterprise could gain benefits from plugging CEP...
Hi Marco, Am generally wondering what kindof event processing speeds are required by this corporations. I happen to meet someone with an online lottery...
Well, as for required processing speeds; how long is a rope? It varies. A *lot*. Some of the most performance hungry industries would be finance and all types...
The original question here of what the application use cases in non-financial sectors was never really discussed in length. From my perspective, we're...
Today I received a copy of the Swedish magazine "CIO" which happens to have BAM as the main theme in this issue. There is an article there that contains a case...
And so on. We could discuss any or more of these use cases if anyone's interested. I'm certainly interested in other use cases. In particular, investigating...
Bruce, Mark, Seth et al, Please keep the use cases coming. Unfortunately I cannot respond in detail at this time since I'm playing catch-up from an Internet...
Hi Marco, I was involved in this draft, but this was a while ago. This was frozen due to overload reasons. Are you interested to move this forward ? Regards, ...
Why do say that ESP has an inherent assumption that events arrive in order? While I would agree that many ESP implementations make that assumption, I don't see...
I don't think 'one size fits all' works for time, sequencing, and causality. Sometimes the arrival of events out-of-order is an error. For other applications...
You raise in passing a problem other than ordering: The need for synchronization of multiple data streams. The clocks might not agree! Seth ... -- Seth Grimes...
No, we agree - ESP does not assume order. We (david, myself, most software vendors) have a general disagreement at this point on the definition of ESP. We...
I think there are two incorrect comments offered by Mark Palmer in his 2/27 post: Mark Palmer writes: "David cites academic work from stanford ("STREAMS"...
I will leave the discussion of ordering to others of a more architectural orientation - since to me events (streaming or otherwise) seem inherently ordered by...
Great point about the Stanford Streams project - I referred to it since I David has frequently used it as the source of confusion around the term "Stream,"...
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