complex-event-processing

Alternative to Esper?

I am really interested in Complex Event Processing and have been looking at Esper. However my company has an anti-GPL stance and I was wondering if there are non-GPL alternatives out there under a more business friendly license like Apache or BSD? ...

Which CEP product to start with?

Hi, I want to learn more on how to build CEP based applications. So I looked around and found several products (overview found here: http://rulecore.com/CEPblog/?page_id=47). But as there are quite a few at the moment, I don't know which is the best to start with. And overall I just would consider the one available for free. The rest i...

Microsoft's StreamInsight - Experiences & SQL Server 2008 R2

Microsoft's Complex Event Processing (CEP) offering StreamInsight was released in tandem with SQL Server 2008 R2. I am wondering: if StreamInsight is in any way tied to the SQL Server 2008 R2 database and if it can be run separately. (From scanning over the documentation it looks like StreamInsight can be run separately but c...

What does PI in OSIsoft's 'PI System' stand for?

What does PI in OSIsoft's 'PI System' stand for? http://www.osisoft.com/resources/case_studies/case_studies.aspx I can't tell if it stands for the symbol/number pi, or if it stands for a previous name for the technology, like 'Process Inteligence'. PI is too close to the more common BI to be just a coincidence. Note - There are Chann...

Esper (C.E.P.) querry to calculate candlesticks every full minute

I am using Complex Event Processing (Esper) technology to provide a real-time candlestick calculations in my system. I am doing fine with calculating values, however I find it difficult to ensure that candle window starts at full minutes (for one minute candle) and ends before the next minute starts (i.e. candle 1[06:00.000 - 06:00.999],...

CEP Engine for .NET

Are there any CEP Engine/Platforms that works friendly with .Net (ie, it has .Net API), other than Nesper and the Microsoft StreamInsight ? ...

Ruby Complex Event Processing

Is there an open-source complex event processing (CEP) engine for ruby? I'm looking specifically for something that offers stateful analysis, not just rules-engine-style antecedent-predicate productions. ...

Python complex event processing

Are there any Python alternatives similar to Esper (Java and .NET) that deal with complex event processing (CEP)? ...