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Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
Ruby eventmachine pres at rubybdx
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Ruby eventmachine pres at rubybdx

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More infos on http://www.mathieu-elie.net/eventmachine-introduction-pres-rubybdx-screencast-fr …

More infos on http://www.mathieu-elie.net/eventmachine-introduction-pres-rubybdx-screencast-fr

Ruby Eventmachine is a really goop option to build scalable real time servers and more...

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Transcript

  • 1. EVENTMACHINEfast, simple event-processing library for Ruby programs
  • 2. EventMachine Components• Reactor• Your code (callbacks)• Tread pool (non blocking long running tasks)
  • 3. Reactor• Main loop / Central point• Dispatch call to business code (your code)• Single threaded !
  • 4. Reactor• run-reactor.rb• EM.run block until its stopped• its not really blocking, the reactor pattern is running forever ;)
  • 5. Your code• Called by reactor• blocking ! (called by a single thread dispatcher aka reactor)
  • 6. Your code• each timer own a callback, like any code like network call etc....• a long running task will block the reactor
  • 7. Tread pool• Pool fixed size !• Dont block the reactor if you have a long running task• use the thread pool !
  • 8. Tread pool• EM.defer -> run the callback inside on thread on the pool thread• Reactor continue to dispatch to other code. nice !
  • 9. simple server• module implements callbacks: easy !• see the EventMachine.run -> launch the reactor• Inside reactor -> start server :)
  • 10. contact / more infos• http://www.mathieu-elie.net -> tech blog -> and all concact infos (github, linkedin, and so on...)• available for freelance• questions ? feel free to mail me :)

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