Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Stateful Apps with OTP

Avatar for Maciej Kaszubowski Maciej Kaszubowski
April 20, 2017
Programming
110
0

Stateful Apps with OTP

Avatar for Maciej Kaszubowski

Maciej Kaszubowski

April 20, 2017

More Decks by Maciej Kaszubowski

See All by Maciej Kaszubowski
Error-free Elixir
Avatar for Maciej Kaszubowski mkaszubowski
0
450
Modular Design in Elixir (ElixirConf EU 2019)
Avatar for Maciej Kaszubowski mkaszubowski
2
920
The Big Ball of Nouns
Avatar for Maciej Kaszubowski mkaszubowski
0
130
Modular Design in Elixir
Avatar for Maciej Kaszubowski mkaszubowski
1
410
Our three years with Elixir
Avatar for Maciej Kaszubowski mkaszubowski
0
280
Concurrency Basics for Elixir
Avatar for Maciej Kaszubowski mkaszubowski
0
150
Distributed Elixir
Avatar for Maciej Kaszubowski mkaszubowski
0
190
Software Architecture
Avatar for Maciej Kaszubowski mkaszubowski
0
160
Let it crash - fault tolerance in Elixir/OTP
Avatar for Maciej Kaszubowski mkaszubowski
0
530

Other Decks in Programming

See All in Programming
KMP × Kotlin 2.3 - How Android Got Slower While iOS Builds Improved by 47%
Avatar for Ryosuke Shimizu (RIO) rio432
0
160
Kingdom of the Machine
Avatar for yui-knk yui_knk
2
1.5k
How We Practice Exploratory Testing in Iterative Development( #scrumniigata ) / 反復開発の中で、探索的テストをどう実施しているか
Avatar for teyamagu teyamagu
PRO
3
770
Structured Concurrency, Scoped Values and Joiners in the JDK 25 26 27
Avatar for José josepaumard
1
150
検索設計から
推論設計への重心移動と
Recall-First Retrieval
Avatar for po3rin po3rin
5
1.6k
Making the RBS Parser Faster
Avatar for Soutaro Matsumoto soutaro
0
680
Agentic UI in the Frontend: Architectures with Open Standards @JAX 2026 in Mainz
Avatar for Manfred Steyer manfredsteyer
PRO
0
110
エラー処理の温故知新 / history of error handling technic
Avatar for nakaryo ryotanakaya
7
1.9k
「OSSがあるなら自作するな」は AI時代も正しいか ── Build vs Adopt の新しい判断基準
Avatar for Kumo Ishikawa kumorn5s
7
2.5k
開発とはなにか、Essenceカーネルで見えるもの
Avatar for ukin0k0 ukin0k0
0
110
cloudnative conference 2026 flyle
Avatar for azihsoyn azihsoyn
0
150
AlarmKitで明後日起きれるアラームアプリを作る
Avatar for Trickart trickart
0
130

Featured

See All Featured
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
Avatar for Vitaly Friedman smashingmag
254
22k
How STYLIGHT went responsive
Avatar for nonsquared nonsquared
100
6.1k
Darren the Foodie - Storyboard
Avatar for Kevinho.art khoart
PRO
3
3.3k
Visual Storytelling: How to be a Superhuman Communicator
Avatar for David Neal reverentgeek
2
530
The untapped power of vector embeddings
Avatar for Frank van Dijk frankvandijk
2
1.7k
Thoughts on Productivity
Avatar for Jon Yablonski jonyablonski
76
5.1k
BBQ
Avatar for Matthew Crist matthewcrist
89
10k
A Modern Web Designer's Workflow
Avatar for Chris Coyier chriscoyier
698
190k
Building Applications with DynamoDB
Avatar for Matt Wood mza
96
7k
The Invisible Side of Design
Avatar for Vitaly Friedman smashingmag
302
52k
The innovator’s Mindset - 
Leading Through an Era of Exponential Change - McGill University 2025
Avatar for Jean-Marc De Jonghe jdejongh
PRO
1
170
GitHub's CSS Performance
Avatar for Jon Rohan jonrohan
1032
470k

Transcript

  1. Stateful Apps with OTP Maciej Kaszubowski

  2. Realtime Apps with OTP Maciej Kaszubowski

  3. Background

  4. Http Server Client

  5. Architecture Server Mobile Mobile Kurento Mobile Websocket Websocket & REST

    WebRTC

  6. Challenges

  7. Async communication with Kurento

  8. Async communication with Clients

  9. Handling Concurrent Calls

  10. Deploys, migrations & Restarts

  11. A lot can go wrong

  12. A lot can go wrong & Errors are dangerous

  13. How to deal with this?

  14. init callback

  15. init callback

  16. init callback

  17. init callback

  18. init callback

  19. init callback

  20. Dealing with failures

  21. RoomServer

  22. RoomServer

  23. Let it FAIL

  24. Room Supervisor RoomServer

  25. Room Supervisor RoomServer

  26. Room Supervisor RoomServer

  27. After the restart, the state is gone

  28. Room Supervisor BackupServer RoomServer

  29. None

  30. Room Supervisor BackupServer RoomServer

  31. None
  32. None

  33. Multiple calls

  34. Room Supervisor BackupServer RoomServer

  35. Common Room Supervisor Room Supervisor Backup Server Room Server Room

    Supervisor Backup Server Room Server

  36. Common Room Supervisor Room Supervisor Backup Server Room Server Room

    Supervisor Backup Server Room Server

  37. Common Room Supervisor Room Supervisor Backup Server Room Server Room

    Supervisor Backup Server Room Server

  38. Common Room Supervisor Room Supervisor Backup Server Room Server

  39. PubSub

  40. Status Updates Server Mobile Join Mobile Room status

  41. MyApp.Endpoint.broadcast( “room_id”, “update_status”, status )

  42. apps/ | |—— domain/ |—— web/

  43. Status Updates Server Mobile Mobile Subscribe Subscribe

  44. Status Updates Server Mobile Mobile Join

  45. Status Updates Server Mobile Mobile Status update Status update

  46. Status Updates

  47. Status Updates

  48. Status Updates

  49. Status Updates

  50. Status Updates

  51. Status Updates

  52. History

  53. History Server Call History Subscribe Status update

  54. History

  55. History

  56. History

  57. Conclusions

  58. Simpler system

  59. Testing is easy

  60. Changes are easy

  61. Great performance

  62. We should learn from the Erlang community

  63. A lot of fun!

  64. Thanks!