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Emmet for HTML: Writing HTML Faster with Shortcuts

2d ago · 4 min read · When people start learning HTML, one thing become very repetitive. Writing tags again and again. Like: <div></div> <div></div> <div></div> Or writing full HTML boilerplate every single time. At begin

Understanding HTML Tags and Elements

2d ago · 4 min read · Whenever you open any website, there is HTML behind it. HTML is one of the most important thing in web development because it create the structure of webpage. Without HTML there is no headings, no but

How a Browser Works: Understanding Browser Internals

2d ago · 5 min read · Have you ever think what actually happen after you type a URL and press Enter? We use browser everyday. Open YouTube. Search in Google. Open Instagram. Read blogs. But behind this simple thing, browse

TSTamal Sarkardt89.hashnode.dev

Setting Up Your First Node.js Application

3d ago · 3 min read · When learning backend development, one of the first tools you'll encounter is Node.js. It allows JavaScript to run outside the browser, making it possible to build servers, APIs, automation scripts, a

CPChirag Purohitchiragpurohit.hashnode.dev

Sessions vs JWT vs Cookies: Understanding Authentication Approaches

3d ago · 4 min read · Sessions Session is a server-side data storage mechanism to persist user-specific data across multiple HTTP requests. It is used because the HTTP is stateless protocol . The server forgets who a user

MSMohd Sameermohd-sameer.hashnode.dev

Behind the Feed: How Instagram Stores Reels, Photos, and Drafts

5d ago · 7 min read · Imagine you are shooting a Reel. You record a 30-second clip, add music, overlay some text captions, and apply a filter. Just before hitting "Share," you hesitate—it needs a final polish tomorrow. You

AKAnkur Kumawathustlecoderankur.hashnode.dev

How Instagram Stores Reels, Photos, and Drafts Behind the Scenes

5d ago · 13 min read · A beginner-friendly system design breakdown of what actually happens when you record a Reel, edit a photo, save a draft, and scroll through your feed all without thinking about any of it. Start Here:

TCP vs UDP : The Internet's Two Delivery Boys

5d ago · 6 min read · Every time you watch YouTube, play online games, open websites, or join Discord call… internet is constantly sending tiny packets between devices. But internet itself is honestly very chaotic. Packets

TCP Working : The Internet's Trust Issues

5d ago · 6 min read · Imagine sending important message to your friend. But there is one problem. The road between both of you is completely chaotic. Some letters gets lost. Some arrives late. Some arrives twice. Some arri

AKAnkur Kumawathustlecoderankur.hashnode.dev

How WhatsApp Works Without Internet: Offline Messaging and Sync Explained

5d ago · 9 min read · You're on a train, signal drops to zero, and you hit send on a WhatsApp message. The app doesn't crash. It doesn't say "failed." It just shows a single grey tick and a few minutes later, when connecti