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
120
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
140
Modular Design in Elixir
Avatar for Maciej Kaszubowski mkaszubowski
1
420
Our three years with Elixir
Avatar for Maciej Kaszubowski mkaszubowski
0
290
Concurrency Basics for Elixir
Avatar for Maciej Kaszubowski mkaszubowski
0
160
Distributed Elixir
Avatar for Maciej Kaszubowski mkaszubowski
0
200
Software Architecture
Avatar for Maciej Kaszubowski mkaszubowski
0
170
Let it crash - fault tolerance in Elixir/OTP
Avatar for Maciej Kaszubowski mkaszubowski
0
530

Other Decks in Programming

See All in Programming
ReactとSvelteのその先、Ripple-TS / Beyond React and Svelte: Ripple-TS
Avatar for TOMIKAWA Sotaro ssssota
3
1.8k
JavaDoc 再入門
Avatar for nagise nagise
0
220
jQueryをバージョンアップする前に使いたいjQuery Migrate
Avatar for Atsushi Matsuo matsuo_atsushi
0
140
気づいたらRubyで100作品 ー クリエイティブコーディングが生活の一部になるまで / 100 Ruby Sketches Later: How Creative Coding Became Part of My Life
Avatar for chobishiba chobishiba
3
500
権限チェックの一貫性を型で守る TypeScript による多層防御
Avatar for aster-mnch (kitagawa) mnch
4
990
運用エージェントは "作る" から "育てる" へ - 記憶と自己進化の3層設計パターン / self-evolving-agents-three-layer-agent-design
Avatar for geeawa gawa
12
3.3k
net-httpのHTTP/2対応について
Avatar for NARUSE, Yui naruse
0
380
[2026年度第1回ORセミナー] 計画最適化ベンチャーと競技プログラミング人材
Avatar for terry-u16 terryu16
0
210
AIチームを指揮するOSS「TAKT」活用術 / How to Use “TAKT,” an OSS Tool for Orchestrating AI Teams
Avatar for nrs nrslib
6
760
AIとRubyの静的型付け
Avatar for ukin0k0 ukin0k0
0
480
脅威をエンジニアリングの糧にして――現場編 / Turning Threats into Engineering Fuel — Field Edition
Avatar for nrs nrslib
0
220
Claspは野良GASの夢をみるか
Avatar for てらうちたかし takter00
0
140

Featured

See All Featured
技術選定の審美眼（2025年版） / Understanding the Spiral of Technologies 2025 edition
Avatar for Takuto Wada twada
PRO
118
120k
Believing is Seeing
Avatar for Spiro Bolos oripsolob
1
140
Ecommerce SEO: The Keys for Success Now & Beyond - #SERPConf2024
Avatar for Aleyda Solis aleyda
1
2k
30 Presentation Tips
Avatar for Ian Lurie portentint
PRO
1
310
The Limits of Empathy - UXLibs8
Avatar for Cassini Nazir cassininazir
1
340
Marketing Yourself as an Engineer | Alaka | Gurzu
Avatar for Gurzu gurzu
0
210
Beyond borders and beyond the search box: How to win the global "messy middle" with AI-driven SEO
Avatar for David Carrasco davidcarrasco
3
150
Have SEOs Ruined the Internet? - User Awareness of SEO in 2025
Avatar for Akash Hashmi akashhashmi
0
350
Imperfection Machines: The Place of Print at Facebook
Avatar for Scott Boms scottboms
270
14k
Getting science done with accelerated Python computing platforms
Avatar for Jacob Tomlinson jacobtomlinson
2
210
My Coaching Mixtape
Avatar for mlcsv mlcsv
0
140
How To Stay Up To Date on Web Technology
Avatar for Chris Coyier chriscoyier
790
250k

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!