---
title: "Discussion on \"Concurrent Rendering in React 19, Part 2: startTransition, useTransition and useDeferredValue\" | Hashnode"
description: "Discussion on \"Concurrent Rendering in React 19, Part 2: startTransition, useTransition and useDeferredValue\". Typing lags while a big list renders? Learn how startTransition, useTransition, and useDeferredValue keep React 19 UI responsive, with real examples."
url: "https://hashnode.com/posts/concurrent-rendering-in-react-19-part-2/6af22d7151cef92a4e25f3ec"
---

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# [Concurrent Rendering in React 19, Part 2: startTransition, useTransition and useDeferredValue](https://refaat1297.hashnode.dev/concurrent-rendering-in-react-19-part-2?utm_source=hashnode&utm_medium=feed)

Typing lags while a big list renders? Learn how startTransition, useTransition, and useDeferredValue keep React 19 UI responsive, with real examples.

1d ago · 16 min read · refaat1297.hashnode.dev  
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## Written by

[Ahmed Refaat](https://hashnode.com/@refaat1297)

@refaat1297 · Benha, Qalyūbīya, EGY

  
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A Front End Developer

A Senior frontend engineer (5+ years) building production apps with React, Next.js, Vue and TypeScript. Clear under-the-hood explanations, real-world examples, and senior interview prep.

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