Open Credo

4 items found: Search results for "esper" in all categories x

Esper Extensions – Implementing Custom Aggregation Function

March 21, 2012 | Software Consultancy

Esper Extensions – Implementing Custom Aggregation Function

Event processing Language (EPL) enables us to write complex queries to get the most out of our event stream in real time, using SQL-like syntax.

EPL allows us to use full power of aggregation of the high volume event stream to get required results with the minimal latency. In this blog we are going to explore some aspects of numerical aggregation of data with high precision BigDecimal values. We will also demonstrate how you can add you own aggregation function to Esper engine and use them in EPL statements.

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OpenCredo Partners with EsperTech to Offer Solutions for High Performance, Event-Driven Systems
A Simple Introduction to Complex Event Processing – Stock Ticker End-to-End Sample

February 8, 2012 | Data Analysis, Data Engineering

A Simple Introduction to Complex Event Processing – Stock Ticker End-to-End Sample

Most of the important players in this space are large IT corporations like Oracle and IBM with their commercial (read expensive) offerings.

While most of CEP products offer some great features, it’s license model and close code policy doesn’t allow developers to play with them on pet projects, which would drive adoption and usage of CEP in every day programming.

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Russ Miles and Jonas Partner Speak at JAX London 2011