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# The Death of Manual Memoization: High-Performance React 19 for the Scaling Startup


- **Event:** Conference India 2026

## Description

For a decade, React developers have been trapped in memoization hell. Manually managing useMemo, useCallback, and React.memo to prevent re-render bottlenecks. As startups scale from India’s corridors to global markets, this technical debt often leads to "spaghetti logic" and fragile performance.

This session dives into the Post-Compiler Era. We will explore how the stable React Compiler (v1.0) and React 19 primitives like Activity and ViewTransition are fundamentally changing how we architect scalable systems. Using real-world benchmarks from high-scale environments (where interactions became up to 2.5x faster), I will demonstrate how to strip away manual optimizations to focus on what truly matters: User Experience.

We will transition from the "Manual Optimization" paradigm to a "Compiler-First" workflow, exploring how to leverage the new Vite+ unified toolchain to achieve production builds that are up to 40x faster than legacy stacks. Whether you are building the next fintech unicorn or a complex health-tech platform, this talk provides a battle-tested blueprint for shipping React apps that move fast without breaking purpose.

## Speaker

### [Vishnudhasan Govindarajan](https://www.wearedevelopers.com/@vishnudhasan-govindarajan)

Product Engineer at CareStack


## Related talks at this congress

- [From Profiler to Production: Measuring What Actually Matters in React & React Native](https://www.wearedevelopers.com/events/conference-india-2026/sessions/1983-from-profiler-to) — Andrei Tazetdinov
- [DevOps for React Developers: From Code to Production](https://www.wearedevelopers.com/events/conference-india-2026/sessions/2011-devops-for-react) — Kristiyan Velkov
- [React Under Fire: Rendering Performance for Streaming Agent UIs](https://www.wearedevelopers.com/events/conference-india-2026/sessions/1992-react-under-fire) — Abhirupa Mitra
- [How We Cut Our API's p99 Latency from Minutes to Under a Second](https://www.wearedevelopers.com/events/conference-india-2026/sessions/1987-how-we-cut-our-api-s) — Deepak Agrawal

## Watch remotely

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- All full videos, bookmarks, and playlists
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[See pricing](https://www.wearedevelopers.com/pricing)

## Links

- [Get tickets](https://www.wearedevelopers.com/conference-india/tickets)