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

Scala: Context & Observability

Avatar for Michał Bednarz Michał Bednarz
May 25, 2023
Programming
84
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
27
Concurrency in Scala: from locks to STM
Avatar for Michał Bednarz bednam
0
170

Other Decks in Programming

See All in Programming
typoなんかねぇよ
Avatar for らすぴー raspython3
0
490
Cloudflare is Agents
Avatar for chimame chimame
0
180
Go 1.27 における memory allocation の高速化
Avatar for ANDPAD inc andpad
0
300
プロポーザルを書いてもらう
Avatar for pvcresin pvcresin
0
580
Pythonの実行はどこまで賢くなったのか？ CPythonとPyPyから見る最適化のしくみ
Avatar for curekoshimizu curekoshimizu
3
1.8k
自動化したのに回らない テスト運用の壁 ―AI時代の品質責任と生産性
Avatar for Masahiko Funaki(舟木 将彦) mfunaki
0
430
30年振りにコンパイラの定数整数除算を改善した
Avatar for herumi herumi
9
4.1k
AI Engineeringは、AIプロダクトだけのものか？ 〜AIがソフトウェアを作る時代の新しい当たり前〜 / No AI in your product. AI Engineering in your development.
Avatar for r-kagaya rkaga
5
520
[PyCon KR 2026] More Variants, More Diversity for AI Accelerators
Avatar for Joongi Kim achimnol
0
110
freee が目指す データ マネジメント戦略 AI-Ready 時代を支える 攻めのガバナンスとは
Avatar for freee freee
PRO
0
470
Press start. Python's next generation.
Avatar for Carol Willing willingc
PRO
2
110
メールのエイリアス機能を履き違えない
Avatar for 船長（せんちょう） isshinfunada
0
250

Featured

See All Featured
B2B Lead Gen: Tactics, Traps & Triumph
Avatar for Sophie Logan marketingsoph
0
220
Impact Scores and Hybrid Strategies: The future of link building
Avatar for Tamara Novitovic tamaranovitovic
0
420
Paper Plane (Part 1)
Avatar for Katie Cordina Lindsey katiecoart
PRO
1
10k
Organizational Design Perspectives: An Ontology of Organizational Design Elements
Avatar for Dr. Kim W Petersen kimpetersen
PRO
1
800
Build The Right Thing And Hit Your Dates
Avatar for Maggie C. maggiecrowley
39
3.4k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
Avatar for soudai sone soudai
PRO
201
75k
Google's AI Overviews - The New Search
Avatar for Barry Adams badams
0
1.1k
Marketing to machines
Avatar for Jono Alderson jonoalderson
1
5.7k
Agile that works and the tools we love
Avatar for Rasmus Luckow-Nielsen rasmusluckow
331
22k
The MySQL Ecosystem @ GitHub 2015
Avatar for Sam Lambert samlambert
251
13k
Bioeconomy Workshop: Dr. Julius Ecuru, Opportunities for a Bioeconomy in West Africa
Avatar for AKADEMIYA2063 akademiya2063
PRO
1
270
Why Your Marketing Sucks and What You Can Do About It - Sophie Logan
Avatar for Sophie Logan marketingsoph
0
390

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