Скачать или смотреть React Native Memory Leaks & App Freezes — Real Causes and Fixes

React Native Memory Leaks & App Freezes — Real Causes and Fixes

Have you ever noticed your React Native app working perfectly in development but freezing, lagging, or crashing in production?

You’re not alone — and it’s usually *not* because React Native is slow.

In this video, we break down **why React Native apps freeze**, what **memory leaks actually mean in RN**, and how experienced engineers think about fixing these issues in real production apps.

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🔥 What You’ll Learn

What a *memory leak* really is in React Native (JS + Native side)
Why apps feel smooth in *Debug* but freeze in *Release builds*
The difference between *JS Thread, UI Thread, and Native Modules*
Common causes of app freezes:
Uncleaned timers & intervals
Event listeners not removed
Heavy re-renders and stale references
Native modules holding memory
How freezes lead to *ANRs, frame drops, and crashes*
A *mental checklist* to catch performance issues before shipping

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🧠 Why This Matters

Most developers try to fix performance by:
Adding loaders
Optimizing FlatLists
Blaming React Native

But the real problems usually come from:
Lifecycle mismanagement
Thread blocking
Silent memory leaks

This video helps you **think like a senior React Native engineer**, not just write faster code.

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🎯 Who This Video Is For

React Native developers working on *real production apps*
Developers facing *random freezes or ANRs*
Engineers preparing for *interviews at product-based companies*
Anyone who wants to understand RN beyond tutorials

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⏱️ Video Chapters

00:00 — Why RN apps freeze in production
01:10 — What memory leaks really mean
03:00 — JS thread vs UI thread (simple explanation)
05:10 — Common leak patterns in RN apps
08:00 — Why Debug vs Release behaves differently
10:30 — How senior engineers debug freezes
12:30 — Final performance checklist

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🚀 Related Videos

React Native New Architecture Explained (Fabric + JSI)
5 React Native Mistakes Killing App Performance
React Native App Size Optimization (Real Case Study)
React Native vs Flutter — Deep Performance Comparison

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💬 Let’s Connect

If this video helped you:
👍 Like the video
🔔 Subscribe for real-world React Native content
💬 Comment “FREEZE” if you’ve faced this issue in your app

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🏷️ Tags

#ReactNative
#ReactNativePerformance
#MemoryLeaks
#MobileAppPerformance
#JSI
#Fabric
#ReactNativeDebugging
#AndroidANR
#iOSPerformance
#ReactNativeTips
#SoftwareEngineering
#CodeSprintLab