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FlowRunner is a high performance matching engine for processing events in near real-time

The software enables continuous query on incoming data stream. The processing engine is a set of components that enables applications to easily incorporate efficient processing of large volume of events. The incoming data streams are processed and dispatched on publish-subscribe basis. This architectural data model defines very granular and flexible interface to other subsystems.

The software is an enabling component for "on the fly" decision making, notification and alerting.

What platforms does the software run on?

The software is a set of Windows .NET assemblies that do not rely on external database.

What interfaces are used to interface with other subsystems?

All native .NET interfaces are supported including remoting. Subscription and triggering objects are strongly-typed via XSD which can be extended.

Does the system sends emails when subscriptions have been matched?

No. The system does not handle delivery of matched subscriptions. The software is a toolkit, and it is the responsibility of a host system to integrate various notification mechanisms.

How does the software work?

The software employs a very efficient B-Tree like traversal algorithm to trigger subscriptions based on events. The resulting trees are very memory efficient and self-rebalancing.

How efficient is the system?

The software is heavily multithreaded so performance improves with additional CPUs. The performance depends on number of outstanding subscriptions, their complexity, and the number of incoming events per second. A reasonably complex subscription list with 100,000 items is can be traversed in under a second.

Is the software a real complex event processing engine?

No. Some of the more advanced features such as the ability to process and correlate multiple streams, "window of time" based computations are not available.

Is the source code available?

Yes. The source code is available for licensed users.

 

Are dynamic queries (subscriptions) declared using SQL syntax?

No. The subscriptions are declared using XML-based API. This XSD-based model is extendable using derived types. User defined functions (operators) are also supported.

   
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