Storm, a top-level Apache project, is a Java framework designed to help programmers write real-time applications that run on Hadoop clusters. Designed at Twitter, Storm excels at processing high-volume message streams to collect metrics, detect patterns or take actions when certain conditions in the stream are detected. Typically Storm scenarios are at the intersection of real time and high volume, such as analyzing financial transactions for fraud or monitoring cell-tower traffic to maintain service level agreements.

Reliable message processing

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