Norberto Ortigoza es instructor para América Latina por parte de Big Nerd Ranch, la empresa de cursos para iOS más importante del mundo. Es Director de Desarrollo en Diverza y co-fundador del grupo Cocoaheads en el Distrito Federal dirigido a desarrolladores en OSX y iOS. También es instructor oficial de Rubymotion. Ha sido programador por más de 20 años, donde ha empleado Sistemas operativos y lenguajes como NeXT, OSX, Solaris, Windows, Smalltalk, Objective-C, C, Java, C#, Ruby, PHP, Python, Perl y en los últimos días Elixir y Go. Ha impartido cursos de desarrollo en India, USA, Colombia, Bélgica y México. Es Ingeniero en Computación por parte de la Facultad de Ingeniería de la UNAM. Tiene estudios de Maestría en Ciencias de la Computación por la UNAM. Diplomado en Procesos y Arquitectura de Software por parte del SEI - Carnegie Mellon University.

1. High Availability with
Erlang/Elixir
Norberto Ortigoza
@hiphoox

2. Availability: state of being
possible to get or use

3. Server Server Server
Cluster

4. Server
App Server App Server App Server

5. Operating System
Process A Process B Process C

6. System
Micro service Micro Service Micro Service

7. Isolation

8. –Alan Kay on the Meaning of “Object-Oriented Programming”
“OOP to me means only messaging, local
retention and protection and
hiding of state-process, and extreme late-
binding of all things..”

9. Erlang has lightweight
processes

10. Process

11. Erlang has messaging

13. Erlang has live code
upgrade

15. An Operating System
on its own

17. So, What do we do when
we detect an error?

18. Let it crash!

19. How?

20. Detect and know why
it crashed

21. Process A Process BMonitor

22. Process A Process BLink

23. Supervision Trees

24. Application
App
Supervisor
Worker Worker Worker

25. Application
App
Supervisor
Worker Worker Worker
Application
App
Supervisor
Worker Worker Worker

26. Client
App
Super
visor
Worker Worker Worker
Server
App
Super
visor
Worker Worker Worker
Server
App
Super
visor
Worker Worker Worker
BEAM

27. BEAM
Client Client Client Client
Client Client Client Client

28. 262,144 process
default limite, scales to
millions

30. Open Telecom
Platform (OTP)

31. GenServer
GenEvent
Supervisor
Application
Agent
Task
Elixir

32. Fault tolerance implies
scalability

33. To make things fault-tolerant we
have to make sure they are
made from isolated components

34. If the components are
isolated they can run in
parallel

35. Things that are isolated
and can run in parallel
are scalable!

36. Elixir

37. defmodule Hello do
IO.puts "Defining the function world"
def world do
IO.puts "Hello World"
end
IO.puts "Function world defined"
end
Hello.world

38. References
• http://www.infoq.com/presentations/Building-
Highly-Available-Systems-in-Erlang
• http://www.infoq.com/presentations/self-heal-
scalable-system
• http://www.infoq.com/presentations/fault-
tolerance-101-qcon-london

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