Rethinking reactivity
summary
Claims a concrete reactivity overhaul: introduces angular signals (signal, computed, effect) in v16 developer preview to replace global Zone.js-driven scans with fine‑grained, component-level updates. Demonstrates a working StackBlitz cipher game that decodes messages and fires confetti, showing signals live in services, templates, pipes. Performance numbers: Zone.js costs ~16KB and global scans, signals are 2 kilobytes or so with no startup monkey‑patching. Notes interoperability with RxJS / NgRx and a road toward fully zoneless apps.
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chapters (15)
- 0:00Welcome
- 1:07Introduction
- 2:10Web development evolution
- 3:58Frameworks shaping modern web
- 5:01Fine-grained reactivity and signals
- 6:46Reactivity core principles
- 8:58Angular change detection challenges
- 10:02Angular global change detection
- 13:57Goals for new reactivity system
- 15:43Angular Signals introduction
- 17:53Demo: Signals Computed and Effects
- 20:45Performance benefits of Signals
- 22:52Future of Angular Signals
- 23:54Community feedback
- 24:35Closing
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