Upgrade to Pro — share decks privately, control downloads, hide ads and more …
Sign up for free

Scala: Context & Observability

Avatar for Michał Bednarz Michał Bednarz
May 25, 2023
Programming
86
0

Scala: Context & Observability

Slides for The Art of Scala presentation in Warsaw on 25th May 2023

Avatar for Michał Bednarz

Michał Bednarz

May 25, 2023

More Decks by Michał Bednarz

See All by Michał Bednarz
Scala: The Ideal Language for Game Wallets
Avatar for Michał Bednarz bednam
0
33
Concurrency in Scala: from locks to STM
Avatar for Michał Bednarz bednam
0
180

Other Decks in Programming

See All in Programming
golang-bob.pdf
Avatar for Yura Iwatsuka iwatsukayura
0
130
[ハンズオン]AIへの指示だけで「五目並べ」を作ってみよう
Avatar for Satoshi Kaneyasu satoshi256kbyte
1
380
Agentic Software Factoryに、すごく賢いIF文を。 / super smart IF statement into the Agentic Software Factory.
Avatar for r-kagaya rkaga
8
2.2k
Railsのためのパスキー実践入門 〜マルチテナントSaaSでの意思決定〜
Avatar for utakaha utakaha
2
550
ソニーのクラウド共通基盤の変遷と AI時代の開発スタイルに合わせた進化 / The Journey of Sony’s Common Cloud Platform and Its Evolution for AI-Native Development
Avatar for KenjiYoneyama kenjiyoneyama
0
270
設計次第でAIコードの読む量は減らせる / designing-for-code-reading
Avatar for MinoDriven minodriven
35
17k
Unity6 URPによる海底をテーマにしたVJシステムの解説 | Unity Shader 完全に理解した 勉強会
Avatar for がむ gam0022
0
370
Apple Intelligence を用いた個人情報誤送信防止、及びユーザーリクエスト体験の改善について
Avatar for Yuki Kuwashima yukiny
0
350
sbt 2.0: takeoff
Avatar for Eugene Yokota eed3si9n
0
160
Agents on Rails - Rails at Scale 2026
Avatar for Irina Nazarova irinanazarova
0
560
C#の現在地 進化の歴史と、AI時代の.NET Everywhere
Avatar for Yoshifumi Kawai neuecc
5
5.2k
Starting & Sustaining Code-Based E2E Testing for Non-Coding QA Teams( #jasstniigata )
Avatar for teyamagu teyamagu
PRO
1
1k

Featured

See All Featured
Navigating Weather and Climate Data
Avatar for Ryan Abernathey rabernat
0
560
AI Search:
Where Are We & What Can We Do About It?
Avatar for Aleyda Solis aleyda
0
8.1k
Agile that works and the tools we love
Avatar for Rasmus Luckow-Nielsen rasmusluckow
331
22k
Effective software design: The role of men in debugging patriarchy in IT @ Voxxed Days AMS
Avatar for Kenny Baas-Schwegler baasie
1
570
Reality Check: Gamification 10 Years Later
Avatar for Sebastian Deterding codingconduct
0
2.3k
The Art of Delivering Value - GDevCon NA Keynote
Avatar for David Neal reverentgeek
16
2.2k
Paper Plane
Avatar for Katie Cordina Lindsey katiecoart
PRO
5
54k
Stewardship and Sustainability of Urban and Community Forests
Avatar for Eric Wiseman pwiseman
0
550
How GitHub (no longer) Works
Avatar for Zach Holman holman
316
150k
Amusing Abliteration
Avatar for ianozsvald ianozsvald
1
350
A better future with KSS
Avatar for Kyle Neath kneath
240
18k
Typedesign – Prime Four
Avatar for Hannes Fritz hannesfritz
42
3.2k

Transcript

  1. Scala: Context & Observability

  2. Context propagation explicit parameter implicit parameter

  3. Thread-safe state on JVM AtomicRef ThreadLocal Every thread has its

    own local copy of the state which is not visible to the others Shared state safely updated by many threads using optimistic concurrency (CAS)

  4. Context propagation on JVM ThreadLocal InheritableThreadLocal DynamicVariable

  5. None
  6. None
  7. None
  8. None
  9. None

  10. Scope Lexical Dynamic Depends on location in source code Depends

    on method call graph
  11. None
  12. None
  13. None

  14. Functional context propagation ReaderT / Kleisli (cats) IOLocal (cats-effect) Context

    functions (scala 3)

  15. Context propagation with cats-mtl Ask Local Stateful read-only environment effect

    dynamic scope effect shared mutable state effect
  16. None
  17. None
  18. None
  19. None
  20. None
  21. None
  22. None

  23. Local + log4cats demo

  24. None

  25. Local + log4cats + IOLocal demo

  26. None
  27. None

  28. Scala 3 Context Functions

  29. None

  30. linktr.ee/mbednarz