Akka vikas hazrati

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Harnessing the power of Akka to build massively scalable system.

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Akka vikas hazrati

  1. 1. Building Massively ScalableApplications with Akka Vikas Hazrati Inphina Technologies 1
  2. 2. what? Platform for next generation, event driven,scalable and fault tolerant architectures on the JVM. 2
  3. 3. akkaA actor-based concurrency frameworkProvides solutions for non blocking concurrencyWritten in Scala, also works in Java Open source Now at 1.3-RC2 (to be released this weekend)Lead developer and founder: Jonas BonerJRockit, AspectWerkz, AspectJ, Terracotta 3
  4. 4. issuesconcurrency scalabilityfault tolerance 4
  5. 5. why akkasimpler concurrency event drivenscale up or scale out fault tolerance remoting scala and java api 5
  6. 6. aha actors!message-Passing Concurrency share NOTHINGisolated lightweight processes communicates through messagesasynchronous and non-blocking 6
  7. 7. actorsdefined in the 1973 paper by Carl Hewittpopularized by Erlangalleviates the devfrom explicit lockingand thread managementeasy to write concurrent and parallel systemsactors like objects BUT dont share state 7
  8. 8. actor modelsThread-basedEvent-based • Very lightweight • can easily create millions on a single workstation (6.5 million on 4 G RAM) 8
  9. 9. 9
  10. 10. defining an actor 10
  11. 11. firing messagesbang bang bang 11
  12. 12. send anything 12
  13. 13. fault tolerancelet it crashlinked set of actors 13
  14. 14. all for one 14
  15. 15. one for one 15
  16. 16. supervisor hierarchies 16
  17. 17. fault management 17
  18. 18. other concepts Akka STMRemote Actors Akka Serialization Persistence 18
  19. 19. problem statement 19
  20. 20. considerations 20
  21. 21. hmm... STM – XSerialization – XPersistence – XRemoting – ?/X 21
  22. 22. 22
  23. 23. 23
  24. 24. 24
  25. 25. issuesmaxing out on the os threads 25
  26. 26. dispatchersthread based – dedicated os thread boundevent based – backed by pool of threadspriority event basedwork stealing 26
  27. 27. 27
  28. 28. ala carte 28
  29. 29. used in ... 29
  30. 30. more informationhttp://akka.io/docs/akka/1.3-RC1/introhttp://thoughts.inphina.com/tag/akka/ 30
  31. 31. Everyone ! “Thanks”vhazrati@inphina.com@vhazrati 31

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