🔬 How It Actually Works

Deep dives into the tools you use every day

Every Saturday
  1. #7

    How WebSockets Actually Work Behind the Scenes

    WebSockets aren't magic. Here's exactly what happens during the handshake, how frames are structured, and why they're different from HTTP.
  2. #6

    How CORS Actually Works (And Why Your Request Gets Blocked)

    CORS errors are the most frustrating part of web development. Here's exactly what the browser does, why preflight requests exist, and how to fix it properly.
  3. #5

    How React's Virtual DOM Actually Works

    React doesn't update the real DOM directly. It diffs a virtual copy first. Here's the reconciliation algorithm explained simply.
  4. #4

    How HTTPS Actually Keeps Your Data Safe

    HTTPS isn't magic. It's a handshake, a key exchange, and symmetric encryption. Here's the full process in plain English.
  5. #2

    How Git Tracks Your Changes (It's Not What You Think)

    Git doesn't store diffs. It stores snapshots. Here's how Git actually works under the hood — blobs, trees, commits, and refs.
  6. #1

    How npm install Actually Works Behind the Scenes

    Ever wondered what happens when you run npm install? Here's the full process: resolution, fetching, linking, and why it sometimes breaks.