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org.apache.storm.topologyClass TopologyBuilderjava.lang.Objectorg.apache.storm.topology.TopologyBuilderpublic class TopologyBuilderextends ObjectTopologyBuilder expo

SpoutsA spout is a source of streams in a topology. Generally spouts will read tuples from an external source and emit them into the topology (e.g. a Kestrel queue or the Twitter API). Spouts can

Running Topologies on a Production ClusterRunning topologies on a production cluster is similar to running in Local mode. Here are the steps:1) Define the topology (Use TopologyBuilder i

Setting Up a Development EnvironmentThis page outlines what you need to do to get a Storm development environment set up. In summary, the steps are:Download a Storm release , unpack it,

Local ModeLocal mode simulates a Storm cluster in process and is useful for developing and testing topologies. Running topologies in local mode is similar to running topologies on a cluster.

TopologiesThe logic for a realtime application is packaged into a Storm topology. A Storm topology is analogous（相似的） to a MapReduce job. One key difference is that a MapReduce job eventually finis

SerializationThis page is about how the serialization system in Storm works for versions 0.6.0 and onwards. Storm used a different serialization system prior to 0.6.0 which is documented on Seri

org.apache.storm.tupleInterface TupleAll Superinterfaces:ITupleAll Known Implementing Classes:TupleImplpublic interface Tupleextends ITupleThe tuple is the main data structu

org.apache.storm.topologyInterface OutputFieldsDeclarerAll Known Implementing Classes:OutputFieldsGetterpublic interface OutputFieldsDeclarerMethod Summary

StreamsThe stream is the core abstraction in Storm. A stream is an unbounded（无限的） sequence of tuples that is processed and created in parallel（平行的） in a distributed fashion（分布式方式）. Streams are def

Apache Storm Why use Storm?Apache Storm 是免费开源的分布式实时计算系统，可以简单且可靠的处理无限制的流式数据，Storm支持多种语言，并且提供了很强大的功能。Apache Storm 支持实时分析，机器学习，持续计算，分布式 RPC, ETL等等Apache Storm 很快，每个节点每秒钟可处理100W个元组

Setting up a Storm Cluster/** 可忽略If you're on AWS,you should check out the storm-deploy project. storm-deploy completely automates the provisioning, configuration, and installation of Storm clus

org.apache.storm.topologyInterface IRichSpoutAll Superinterfaces:IComponent, ISpout, SerializableAll Known Implementing Classes:BaseRichSpout, BlobStoreAPIWordCountTopology.Rando