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espertechinc / esper

Esper Complex Event Processing, Streaming SQL and Event Series Analysis
GNU General Public License v2.0
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cep compiler complex-event-processing esper espertech event-series-analysis java open-source streaming-sql

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Esper - Complex Event Processing, Streaming SQL and Event Series Analysis for Java

Esper is a component for complex event processing (CEP), streaming SQL and event series analysis, available for Java as Esper, and for .NET as NEsper.

Esper's home page and documentation are at http://www.espertech.com/esper

Esper and NEsper are open-source software available under the GNU General Public License (GPL) version 2 (GPL v2).

This repository tracks changes since release 5.2.0 and as of April 6, 2015. The repository prior to that date was the Codehaus repository which has been discontinued.

Esper and NEsper including documentation are copyrighted and the copyright is owned by EsperTech Inc., unauthorized reproduction or distribution of this copyrighted work is illegal.

For commercial licensing terms, please contact EsperTech Inc. for any inquiry.

Note on Master versus Releases

At this time Master tracks version 6.0 and up development. Since version 9.0.0 Esper requires Java 17 (older versions required Java 8).