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Tag Archives: Twitter Storm

Error handling in Storm Trident topologies

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This post summarizes my current approach to error handling when designing Storm Trident topologies. I focus here on code design, not on deployment good practices like supervision nor redundancy. Because of the real-time stream nature of Storm, when facing most kinds of error we’ll ultimately have to move on to the next piece of data. Error handling in that context ...

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Scalable real time state update with Storm

java-interview-questions-answers

In this post, I illustrate how to maintain in DB the current state of a real time event-driven process in a scalable and lock free manner thanks to the Storm framework. Storm is an event based data processing engine. Its model relies on basic primitives like event transformation, filtering, aggregation… that we assemble into topologies. The execution of a topology ...

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Akka vs Storm

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I was recently working a bit with Twitter’s Storm, and it got me wondering, how does it compare to another high-performance, concurrent-data-processing framework, Akka. What’s Akka and Storm? Let’s start with a short description of both systems. Storm is a distributed, real-time computation system. On a Storm cluster, you execute topologies, which process streams of tuples (data). Each topology is ...

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The complex (event) world

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This blog entry attempts to summarize the technologies in the CEP domain, touching over their prime feature(s) as well as their lackings.  It seems sometimes that the term CEP is being overused (as did happen with ‘ESB’) and the write-up below reflects our perception and version of it. ESPER (http://esper.codehaus.org/) is a popular open source component for complex event processing (CEP) ...

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