Designing a User Model for Multiple Roles (Without Losing Your Mind)You know that moment when your app suddenly needs more kinds of users? You start with a simple User model — just name, email, password.Life is peaceful. Everything makes sense. Then your PM drops the bomb: “We need admins, vendors, and customers.And...Oct 26, 2025 · 5 min readsystemdesignbykolar.hashnode.dev
What Happens When You Type a URL in Your Browser? 🌐You open your browser, type www.google.com, and boom — Google appears in seconds. But what really happens in that tiny moment between hitting “Enter” and seeing the page load? Behind the scenes, dozens of technologies and protocols spring into action...Oct 20, 2025 · 5 min readthe-internet-series.hashnode.dev
How the Internet Works (Simplified for Developers)Ever wondered what really happens when you hit “Send” on WhatsApp, or type google.com into your browser? Spoiler: your data doesn’t just teleport. The Internet is more like the world’s busiest postal system—except instead of envelopes and delivery tr...Oct 6, 2025 · 3 min readthe-internet-series.hashnode.dev
