Actor Model in Ruby

Talk in RubyConf Brazil 2016

Transcript

1. Actor Model in Ruby Celso Crivelaro @celsocrivelaro http://crivelaro.me 1
2. DEVELOPER @ PROFESSOR @
4. My problem
5. Authorization APIs SMTP Protocol Strange Protocol Strange Lib 5
6. Strange Protocol / Strange Lib => Unmaintained Bad documentation Troubleshooting was impossible
7. Authorization APIs TCP/IP Custom Protocol SMTP Protocol
8. High Concurrency ~ 1000 connections Fault Tolerant Easy TCP Server API
10. Actors Reactor 10
11. Actor Model Theory
12. Actor 1 Mailbox Actor 2 Mailbox Actor 3 Mailbox
13. Actors are similar to Objects
14. Send messages to each other Asynchronous Actors Objects Synchronous Create new ones Isolated Share memory Keep state
15. Actors can be distributed 15
16. Actor 1 Mailbox Actor 2 Mailbox Actor 3 Mailbox
17. Fault Tolerant
18. Let it crash philosophy
19. Actor 1 Mailbox Actor 2 Mailbox Actor 3 Mailbox Actor 4 Mailbox A4 is linked to A2 A2 is warned when A4 crashes A2 takes an action (restart A4) Avoid defensive programming
20. Who implements Actors 20
21. Pykka
23. Celluloid Actors Ruby Objects Same structure from classes Runs over threads / fibers Futures and Pools Sync / Async Methods
26. When Actor crashes…
28. What if another actor could do something?
29. Supervisors
32. Even if an Actor just terminates
34. Actor Supervisor Restart Actor Warn other Supervisor Callbacks Avoid begin… rescue... / if Actions:
35. Must be finished to be CG’ed 35
37. Futures
39. Pool
40. Res 1 Res 2 Res 3 Pool Res 1 40
42. http://www.mikeperham.com/2015/10/14/should-you-use-celluloid/
44. Actors Reactor
45. Reactor Pattern 45
46. Handler 1 Handler 2 Dispatcher Handler 3 Handles service request Delivered concurrently to handlers Demultiplexing Event Event Event
47. https://github.com/celluloid/nio4r
50. Server Celluloid:IO Supervisor 50
53. Important
54. Mutant Data Structure
55. Actor 1 Mailbox Actor 2 Mailbox Actor 3 Mailbox Microservices 55
56. Evaluate the best concurrency model Celluloid Documentation
57. References
58. http://www.brianstorti.com/the-actor-model/
60. https://www.sitepoint.com/an-introduction-to-celluloid-part-i/
61. https://github.com/celluloid/celluloid-io
62. http://queroserdevlocaweb.com.br/
63. Thank you! @celsocrivelaro Slides at http://crivelaro.me