React 19.2 in the Wild: Activities, Effects, and Performance in Practice
React 19.2 introduced new primitives for managing effects, background rendering, and performance, but most teams don’t adopt them straight from the release notes. Production apps carry constraints, legacy patterns, and performance debt that make change slower and riskier.
What it's about
React 19.2 introduced new primitives for managing effects, background rendering, and performance, but most teams don’t adopt them straight from the release notes. Production apps carry constraints, legacy patterns, and performance debt that make change slower and riskier.
This talk looks at React 19.2 in the wild by breaking down how typical UIs we build in real applications can evolve with the new APIs. We’ll look at how <Activity />, useEffectEvent, and cacheSignal change common approaches to state, rendering, and data handling, and how to start taking advantage of them to make everyday React apps feel smoother and more predictable.
What you'll leave with
- How <Activity /> enables background rendering and “warm” UIs in real navigation flows
- When useEffectEvent simplifies effect logic and eliminates unstable dependency issues
- How cacheSignal fits into data and rendering strategies with RSC
- What React 19.2’s performance tracks change in practice
- How to introduce these APIs incrementally without breaking existing patterns
Who it's for
Frontend engineers building and maintaining production React applications who care about correctness, performance, and incremental adoption of new APIs.
More talks
Want a talk like this at your event?
Tell me about your audience and I'll adapt this talk — or build something new — to fit your room. I reply within two days.