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Storm is a distributed realtime computation system. Similar to how Hadoop provides a set of general primitives for doing batch processing, Storm provides a set of general primitives for doing realtime computation. Storm is simple, can be used with any programming language, [is used by many companies](https://github.com/nathanmarz/storm/wiki/Powered-By), and is a lot of fun to use!
The [Rationale page](https://github.com/nathanmarz/storm/wiki/Rationale) on the wiki explains what Storm is and why it was built. [This presentation](http://vimeo.com/40972420) is also a good introduction to the project.
Storm has a website at [storm-project.net](http://storm-project.net). Follow [@stormprocessor](https://twitter.com/stormprocessor) on Twitter for updates on the project.
## Documentation
Documentation and tutorials can be found on the [Storm wiki](http://github.com/nathanmarz/storm/wiki).
## Getting help
__NOTE:__ The google groups account storm-user@googlegroups.com is now officially deprecated in favor of the Apache-hosted user/dev mailing lists.
### Storm Users
Storm users should send messages and subscribe to [user@storm.incubator.apache.org](mailto:user@storm.incubator.apache.org).
You can subscribe to this list by sending an email to [user-subscribe@storm.incubator.apache.org](mailto:user-subscribe@storm.incubator.apache.org). Likewise, you can cancel a subscription by sending an email to [user-unsubscribe@storm.incubator.apache.org](mailto:user-unsubscribe@storm.incubator.apache.org).
You can view the archives of the mailing list [here](http://mail-archives.apache.org/mod_mbox/incubator-storm-user/).
### Storm Developers
Storm developers should send messages and subscribe to [dev@storm.incubator.apache.org](mailto:dev@storm.incubator.apache.org).
You can subscribe to this list by sending an email to [dev-subscribe@storm.incubator.apache.org](mailto:dev-subscribe@storm.incubator.apache.org). Likewise, you can cancel a subscription by sending an email to [dev-unsubscribe@storm.incubator.apache.org](mailto:dev-unsubscribe@storm.incubator.apache.org).
You can view the archives of the mailing list [here](http://mail-archives.apache.org/mod_mbox/incubator-storm-dev/).
### Which list should I send/subscribe to?
If you are using a pre-built binary distribution of Storm, then chances are you should send questions, comments, storm-related announcements, etc. to [user@storm.apache.incubator.org](user@storm.apache.incubator.org).
If you are building storm from source, developing new features, or otherwise hacking storm source code, then [dev@storm.incubator.apache.org](dev@storm.incubator.apache.org) is more appropriate.
### What will happen with storm-user@googlegroups.com?
All existing messages will remain archived there, and can be accessed/searched [here](https://groups.google.com/forum/#!forum/storm-user).
New messages sent to storm-user@googlegroups.com will either be rejected/bounced or replied to with a message to direct the email to the appropriate Apache-hosted group.
### IRC
You can also come to the #storm-user room on [freenode](http://freenode.net/). You can usually find a Storm developer there to help you out.
## License
The use and distribution terms for this software are covered by the
Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
which can be found in the file LICENSE.html at the root of this distribution.
By using this software in any fashion, you are agreeing to be bound by
the terms of this license.
You must not remove this notice, or any other, from this software.
## Project lead
* Nathan Marz ([@nathanmarz](http://twitter.com/nathanmarz))
## Committers
* James Xu ([@xumingming](https://github.com/xumingming))
* Jason Jackson ([@jason_j](http://twitter.com/jason_j))
* Andy Feng ([@anfeng](https://github.com/anfeng))
* Flip Kromer ([@mrflip](https://github.com/mrflip))
* David Lao ([@davidlao2k](https://github.com/davidlao2k))
* P. Taylor Goetz ([@ptgoetz](https://github.com/ptgoetz))
## Contributors
* Christopher Bertels ([@bakkdoor](http://twitter.com/bakkdoor))
* Michael Montano ([@michaelmontano](http://twitter.com/michaelmontano))
* Dennis Zhuang ([@killme2008](https://github.com/killme2008))
* Trevor Smith ([@trevorsummerssmith](https://github.com/trevorsummerssmith))
* Ben Hughes ([@schleyfox](https://github.com/schleyfox))
* Alexey Kachayev ([@kachayev](https://github.com/kachayev))
* Haitao Yao ([@haitaoyao](https://github.com/haitaoyao))
* Dan Dillinger ([@ddillinger](https://github.com/ddillinger))
* Kang Xiao ([@xiaokang](https://github.com/xiaokang))
* Gabriel Grant ([@gabrielgrant](https://github.com/gabrielgrant))
* Travis Wellman ([@travisfw](https://github.com/travisfw))
* Kasper Madsen ([@KasperMadsen](https://github.com/KasperMadsen))
* Michael Cetrulo ([@git2samus](https://github.com/git2samus))
* Thomas Jack ([@tomo](https://github.com/tomo))
* Nicolas Yzet ([@nicoo](https://github.com/nicoo))
* Fabian Neumann ([@hellp](https://github.com/hellp))
* Soren Macbeth ([@sorenmacbeth](https://github.com/sorenmacbeth))
* Ashley Brown ([@ashleywbrown](https://github.com/ashleywbrown))
* Guanpeng Xu ([@herberteuler](https://github.com/herberteuler))
* Vinod Chandru ([@vinodc](https://github.com/vinodc))
* Martin Kleppmann ([@ept](https://github.com/ept))
* Evan Chan ([@velvia](https://github.com/velvia))
* Sjoerd Mulder ([@sjoerdmulder](https://github.com/sjoerdmulder))
* Yuta Okamoto ([@okapies](https://github.com/okapies))
* Barry Hart ([@barrywhart](https://github.com/barrywhart))
* Sergey Lukjanov ([@Frostman](https://github.com/Frostman))
* Ross Feinstein ([@rnfein](https://github.com/rnfein))
* Junichiro Takagi ([@tjun](https://github.com/tjun))
* Bryan Peterson ([@Lazyshot](https://github.com/Lazyshot))
* Sam Ritchie ([@sritchie](https://github.com/sritchie))
* Stuart Anderson ([@emblem](https://github.com/emblem))
* Robert Evans ([@revans2](https://github.com/revans2))
* Lorcan Coyle ([@lorcan](https://github.com/lorcan))
* Derek Dagit ([@d2r](https://github.com/d2r))
* Andrew Olson ([@noslowerdna](https://github.com/noslowerdna))
* Gavin Li ([@lyogavin](https://github.com/lyogavin))
* Tudor Scurtu ([@tscurtu](https://github.com/tscurtu))
* Homer Strong ([@strongh](https://github.com/strongh))
* Sean Melody ([@srmelody](https://github.com/srmelody))
* Jake Donham ([@jaked](https://github.com/jaked))
* Ankit Toshniwal ([@ankitoshniwal](https://github.com/ankitoshniwal))
## Acknowledgements
YourKit is kindly supporting open source projects with its full-featured Java Profiler. YourKit, LLC is the creator of innovative and intelligent tools for profiling Java and .NET applications. Take a look at YourKit's leading software products: [YourKit Java Profiler](http://www.yourkit.com/java/profiler/index.jsp) and [YourKit .NET Profiler](http://www.yourkit.com/.net/profiler/index.jsp).