JJaaniinmobile-dev-01.hashnode.dev·May 30 · 7 min readHow Instagram Stores Reels, Photos, and Drafts Behind the ScenesImagine this. You spend 20 minutes recording a Reel. You trim clips. Add music. Adjust filters. Write a caption. Then suddenly someone calls you. You close Instagram. A few hours later, you reopen the00
JJaaniinmobile-dev-01.hashnode.dev·May 30 · 7 min readHow WhatsApp Works Without Internet: Offline Messaging and Sync ExplainedImagine this. You're on a flight with Airplane Mode enabled. You open WhatsApp, type: "I'll reach by 8 PM." and press Send. Surprisingly, the message immediately appears in the chat. But there's no 00
JJaaniinmobile-dev-01.hashnode.dev·May 23 · 4 min readExpo Router vs React Navigation: The Mental Model That Changes EverythingMany developers compare Expo Router and React Navigation as if they're competing products. They aren't. The reality is much more interesting. Expo Router is built on top of React Navigation. Understan00
JJaaniinmobile-dev-01.hashnode.dev·May 23 · 4 min readWhat Most React Native Developers Get Wrong About Building Apps Like Instagram, Uber & NetflixMany developers believe that building apps like Instagram, WhatsApp, Uber, or Netflix is about recreating the UI. The reality is very different. The UI is often the easiest part. The real challenge is00
JJaaniinjs-revision.hashnode.dev·May 9 · 8 min readHow Virtual DOM Works Under the HoodIntroduction Imagine updating a single message on a huge notice board. One way is to erase the entire board and rewrite everything again. That would be slow and inefficient. Another way is to find exa00
