PKPRINCE KUMARinprincekumar-engineer.hashnode.dev·6d ago · 6 min readLinux File System HuntingUnderstanding Linux Like a Backend Engineer: Imagine building the world’s fastest Formula 1 car, your web app, but having no idea how the engine, fuel lines, or electrical systems work. That’s what ba00
PKPRINCE KUMARinmobiledevcohort2026.hashnode.dev·May 31 · 8 min readHow Instagram Stores Reels, Photos, and Drafts Behind the ScenesINTRODUCTION: Imagine this: You record a Reel on your phone. You add music, apply filters, trim clips, and then suddenly close the app or lose internet. Later, you reopen the app — and your draft is s00
PKPRINCE KUMARinmobiledevcohort2026.hashnode.dev·May 31 · 8 min readHow WhatsApp Works Without Internet: Offline Messaging and Sync ExplainedINTRODUCTION: Imagine this: You turn on airplane mode, open WhatsApp, and send: "Reached home 👍" Surprisingly: The message appears instantly in your chat It looks like it was sent You can contin00
PKPRINCE KUMARinmobiledevcohort2026.hashnode.dev·May 21 · 8 min readHow Instagram, WhatsApp, Uber & Netflix Would Be Built Today Using Expo RouterINTRODUCTION: Imagine building: An app with millions of users Real-time chat messages Infinite scrolling feeds Live maps updating every second Video streaming across devices Offline support in w00
PKPRINCE KUMARinmobiledevcohort2026.hashnode.dev·May 21 · 10 min readExpo Router vs React Navigation - Which One Should You Use in 2026?INTRODUCTION: Imagine you’re building a mobile app like: a food delivery app 🍔 a banking dashboard 💳 a social media app 📱 an admin analytics app 📊 Users constantly move between screens: Log00
