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Indic threads pune12-akka-actors

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The 7th Annual IndicThreads Pune Conference was held on 14-15 December 2012. http://pune12.indicthreads.com/

The 7th Annual IndicThreads Pune Conference was held on 14-15 December 2012. http://pune12.indicthreads.com/

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Transcript

  • 1. Implementing Lock Free Concurrency with AKKASameer Arora
  • 2. Agenda● Actor Model for Concurrency.● Actors V Threads.● Sleeping Barber Problem.● Introduction to Akka.● Demo● Questions & Feedback 2
  • 3. Actors● Are Objects that communicate only by means of Asynchronous messagepassing.● Do not expose their state to other objects/actors.● Provide a Non Blocking,highly performant event-driven programming model . 3
  • 4. Actors V Threads● Writing Concurrent programs using Threads is too hard to write and test.● Shared Memory Model causes Race Conditions, Lowered throughput, deadlocks.● Actors are Lightweight - consume ~600 bytes memory.● Do not map one-to-one with OS Threads.● Actors remain in a suspended state – function via Schedulers running underneath.● Actors Offer a Lock-free approach to concurrency – helps in Scaling and increased 4 Throughput.
  • 5. Sleeping Barber Problem 5
  • 6. AKKA● Provides a Run time for Actors Programming model.● Manages the Actors life-cycle● Has API for Java and Scala .● Provides Integration with Spring Integration,Apache Camel, Google Guice etc. 6
  • 7. DemoSleeping Barber problem with AkkaSimple Routing Application on Akka 7
  • 8. Questions/Comments/Feedback 8