---
title: "Discussion on \"React Interview Questions (Part 4): Rendering and Performance Optimization\" | Hashnode"
description: "Discussion on \"React Interview Questions (Part 4): Rendering and Performance Optimization\". Explore React performance optimization with virtual DOM, controlled components, keys, and code-splitting using React.lazy and Suspense"
url: "https://hashnode.com/posts/react-interview-questions-part-4-rendering-and-performance-optimization/670525ef4bb8b1720444cddc"
---

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# [React Interview Questions (Part 4): Rendering and Performance Optimization](https://yusufuysal.hashnode.dev/react-interview-questions-part-4-rendering-and-performance-optimization?utm_source=hashnode&utm_medium=feed)

Explore React performance optimization with virtual DOM, controlled components, keys, and code-splitting using React.lazy and Suspense

Oct 8, 2024 · 3 min read · yusufuysal.hashnode.dev  
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-   [#reactjs](https://hashnode.com/tag/reactjs)
-   [#interview-questions](https://hashnode.com/tag/interview-questions)
-   [#virtual-dom](https://hashnode.com/tag/virtual-dom)
-   [#controlled-and-uncontrolled-components](https://hashnode.com/tag/controlled-and-uncontrolled-components)
-   [#performance](https://hashnode.com/tag/performance)
-   [#code-splitting](https://hashnode.com/tag/code-splitting)
-   [#lazy-loading](https://hashnode.com/tag/lazy-loading)

## Written by

[Yusuf Uysal](https://hashnode.com/@yusufuysal)

@yusufuysal · Turkey

  
[View profile](https://hashnode.com/@yusufuysal)

Frontend Developer

𝗗𝗿𝗶𝘃𝗲𝗻 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with extensive experience in JavaScript, React.js, and Next.js. I help companies enhance user engagement and deliver high-performance web applications that are responsive, accessible, and visually appealing. Beyond my technical skills, I am a 𝗰𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝘃𝗲 𝘁𝗲𝗮𝗺 𝗽𝗹𝗮𝘆𝗲𝗿 who thrives in environments that value continuous learning and innovation. I enjoy projects where I can leverage my expertise in 𝗿𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝘃𝗲 𝗱𝗲𝘀𝗶𝗴𝗻, 𝗯𝗿𝗼𝘄𝘀𝗲𝗿 𝗰𝗼𝗺𝗽𝗮𝘁𝗶𝗯𝗶𝗹𝗶𝘁𝘆, 𝗮𝗻𝗱 𝘄𝗲𝗯 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 to deliver seamless user experiences. I get excited about opportunities where I can contribute to creating dynamic, user-focused applications while working closely with cross-functional teams to drive impactful results. I love connecting with new people, and you can reach me at yusufuysal.dev@gmail.com.

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