The document discusses the decision to use Elixir and Phoenix for a system handling massive photo uploads, highlighting their high scalability and performance. It covers key features of Elixir, such as functional programming and immutability, as well as Phoenix's architecture including its routing and data handling. Additionally, it lists several libraries used in the project for authentication, background jobs, and code analysis.

1. Introduction to
Elixir and Phoenix
VLADIMIR ROSANČIĆ
RAILS/PHOENIX DEVELOPER

2. STRUCTURE
1. Decision
2. Elixir
3. Phoenix
4. Libraries

3. 01WHY DID WE DECIDE TO USE
ELIXIR/PHOENIX?

6. 300 GB photos per cruise
20M photos per year
80K passengers per week

7. Results
Stable system
Great performance
Good codebase
Productivity at the high level

10. 02ELIXIR

12. Erlang is a programming language used to build
massively scalable soft real-time systems with
requirements on high availability.

13. highly scalable

14. fault tolerant

15. hot code swapping

16. distributed

17. bad coding experience

19. + =
Jose Valim

20. highly scalable

21. fault tolerant

22. hot code swapping

23. distributed

24. great coding experience

25. Elixir is…

26. … functional

27. passenger = new Passenger()
passenger.sail(cruise)
“PASSENGER”.downcase
passenger = Passenger.new()
Passenger.sail(passenger, cruise)
String.downcase(“PASSENGER”)
OO: FP:

28. … compiled

30. … dynamic

31. age = 37
name = “John Doe”

32. … immutable

33. user = %{email: "test@example.com"}
SomeModule.change_email(user, "new@example.com")
user.email # => "test@example.com"

34. user = %{email: "test@example.com"}
user = %{email: "new@example.com"}
user.email # => "new@example.com"

35. Syntax

37. Basic data types

41. Piping |>

45. Pattern matching

53. Concurrency

54. 03PHOENIX

55. Chris McCord

56. Plug

60. conn → endpoint → router
→ controller → conn

61. Endpoint

63. Router

65. Controller

67. View

70. Data Layer

71. Ecto.Repo
Ecto.Schema
Ecto.Changeset
Ecto.Query

73. Channels

74. 04LIBRARIES WE USE

75. https://github.com/ueberauth/guardian
GUARDIAN
Authentication

76. https://github.com/vt-elixir/ja_serializer
JA SERIALIZER
JSON API Serialization / Deserialization

77. https://github.com/thoughtbot/bamboo
BAMBOO
Email Library

78. https://github.com/akira/exq
EQX
Sidekiq-like background job library

79. https://github.com/boydm/policy_wonk
POLICY WONK
Authorization

80. https://github.com/c-rack/quantum-elixir
QUANTUM
Cron-like job scheduler

81. https://github.com/rrrene/credo
CREDO
Static code analysis tool

82. Visit infinum.co or find us on social networks:
infinum.co infinumco infinumco infinumco infinum
Thank you!