Compact Strings

on YouTube ↗01h 02m

" summary

Covers JDK 9 changes to java.lang.String: Compact Strings (using single-byte storage for strings that fit in a single-byte charset to reduce memory and often improve performance) and Indify String Concat (using invokedynamic-based string concatenation so runtime can optimize concatenation without requiring recompilation). Explains rationale and implementation pitfalls for making these core library/runtime changes.

AI-written summary · about

" chapters (47)

1. 0:00Intro
2. 0:13Intro: Expectations
3. 1:30Compact Strings: String internals
4. 2:54Compact Strings: Some RealWorld (tm) Data
5. 4:05Compact Strings: Wouldn't It Be Awesom
6. 5:00Compact Strings: Thou shalt Not Regress
7. 6:14Compact Strings: Bird's Eye View
8. 7:52Compact Strings: JDK Development In 5
9. 8:35CS, Coders: OOP
10. 11:12CS, Coders: Hide Me Under The Tree
11. 12:41CS, Coders: Tagged Arrays
12. 16:20CS, Zeroes: What kind of Sourcery Is Th
13. 17:12CS, Zeroes: Truth or Dare
14. 21:17CS, Kill Switch: Naively...
15. 22:03CS, Kill Switch: Working...
16. 24:13CS, Kill Switch: Will This Work?
17. 25:06CS, Kill Switch: What About This One?
18. 25:46CS, Kill Switch: It's ALIVE!
19. 26:36CS, Kill Switch: Will This Do?
20. 27:46CS, Kill Switch: Or This?
21. 29:38CS, Arrays: String
22. 30:52CS, getChar: What Could Possibly Be Simpler
23. 31:40CS, getChar: Running With Scissors
24. 32:42CS, getChar: Running With Longer Scissors
25. 33:23CS, getChar: Recap
26. 36:55CS, Catharsis: Performance
27. 38:13Indify String Concat: See Any Concat In Bytecode?
28. 38:38Indify String Concat: OptimizeString Concat
29. 40:40Indify String Concat: Caveat #1
30. 41:29Indify String Concat: Caveat #2: «Univer
31. 42:43Indify String Concat: Caveat #3: Reliab
32. 43:34Indify String Concat: Insight
33. 44:52Indify String Concat: Late Binding
34. 45:43Indify String Concat: invokedynamic magic
35. 47:34ISC, Init: Oops
36. 48:01ISC, Init: Thank You, Dear Jigsaw
37. 49:16ISC, Startup: Take This HelloWorld Example
38. 50:22ISC, Startup: Necessary Evil?
39. 50:59ISC, Strategies: Basic
40. 51:41ISC, Strategies: More advanced
41. 52:23ISC, Strategies: Even more advanced
42. 53:07ISC, Strategies: Something completely dif
43. 53:57ISC, Catharsis: Performance
44. 55:10Rendezvous: Compact Strings + Indy String Concat
45. 55:50Rendezvous: String Fusion
46. 56:47Rendezvous: Future
47. 58:41Conclusion: What About Real Applications?

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