Autotracking: Reactivity and State in Modern Ember
summary
Autotracking claims to give Ember Octane fast reactivity with minimal annotation by wrapping root state with a tracked decorator and using a global revision counter plus per-state tags to validate cached results. Implementation uses memoization based on accessed values and tracked-builtins (tracked arrays/maps) so updates are cheap, derived getters run only when touched, and performance approaches observables while keeping ergonomics similar to virtual DOM patterns. Tooling and library extraction are practical next steps.
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chapters (9)
- 0:00Start
- 1:08What Is It and Why Do We Care
- 3:07Handlebars Templates
- 6:02Annotation Overhead
- 8:57What Is Declarative
- 10:05Root State and Derived State
- 12:29Push-Based Reactivity
- 16:28Virtual Dom
- 17:18Poll Based Reactivity
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