@amankumar72

Aman Kumar

@amankumar72

Joined January 2026

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Aman Kumar's blogs

Aman Kumaraman-kumar.hashnode.dev53 posts

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AKAman Kumaraman-kumar.hashnode.dev

How Large-Scale React Native Apps Are Structured

1d ago · 7 min read · Building a small React Native app is easy. You create: screens/ components/ and everything works fine. But what happens when the app grows to: 200+ screens Realtime chat Live tracking Offline cac

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AKAman Kumaraman-kumar.hashnode.dev

React Navigation vs Expo Router in React Native

1d ago · 7 min read · Imagine you are building a mobile app with multiple screens: Login Screen Home Screen Settings Screen Profile Screen Now users need to move between screens smoothly. Questions start appearing:

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AKAman Kumaraman-kumar.hashnode.dev

The Linux File System: A Detective's Field Notes Beyond ls and cd

May 10 · 14 min read · Most developers treat the Linux file system as a place to put files. But the file system is more than storage — it is the OS's nervous system. The kernel exposes live kernel state as readable files. N

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AKAman Kumaraman-kumar.hashnode.dev

Understanding JWT Authentication in Node.js

May 10 · 6 min read · Imagine you build a website where users can: log in upload files create posts view private data Now think about this question: How does the server know which user is making the request? If someo

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AKAman Kumaraman-kumar.hashnode.dev

Understanding File Storage and Static Files in Express

May 10 · 6 min read · Imagine you upload a profile picture on a website. The upload succeeds. But when you try opening the image in the browser: Cannot GET /uploads/photo.png At this point many beginners ask: “If the file

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Aman Kumar

About

Available for

Aman Kumar's blogs

Recently published

How Large-Scale React Native Apps Are Structured

React Navigation vs Expo Router in React Native

The Linux File System: A Detective's Field Notes Beyond ls and cd

Understanding JWT Authentication in Node.js

Understanding File Storage and Static Files in Express

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Aman Kumar

About

Available for

Aman Kumar's blogs

Recently published

How Large-Scale React Native Apps Are Structured

React Navigation vs Expo Router in React Native

The Linux File System: A Detective's Field Notes Beyond ls and cd

Understanding JWT Authentication in Node.js

Understanding File Storage and Static Files in Express