@icodefullstack

Understanding REST APIs: The Foundation of Modern Web Communication

May 8 · 7 min read · Every modern application — from social media apps to banking platforms — relies on APIs to communicate between frontend and backend systems. When your React app fetches user data, submits a login form

Understanding React Virtual DOM: How React Updates UI Efficiently

May 8 · 8 min read · Modern web applications update the UI constantly — typing in inputs, receiving notifications, filtering lists, animations, and more. If every small change directly manipulated the browser DOM, applica

File Uploads in Express with Multer

May 5 · 12 min read · Handling file uploads is one of those tasks that seems like it should be simple — the browser has a file input, the server should receive the file. But the mechanics of how file data travels over HTTP

Express Middleware: The Checkpoint System Between Request and Response

May 5 · 11 min read · Express Middleware: The Checkpoint System Between Request and Response Every HTTP request that arrives at an Express application goes through more than just a route handler. Before your handler runs —

The Node.js Event Loop Explained

May 5 · 14 min read · Every time someone describes Node.js as "non-blocking" or "asynchronous," they are describing behavior that comes from one mechanism: the event loop. It is the piece of Node.js architecture that most