The Node.js Event Loop ExplainedNode.js runs on a single main thread. That sounds limiting, and in one sense it is. Only one thing can sit on the call stack at a time. But that is exactly why the event loop matters. It lets Node.js May 8, 2026·4 min read
File uploads in Express: a Multer guideMost HTTP requests carry simple text. A JSON body, some query params. The server reads it, done. File uploads are different. When a browser sends a file, it wraps everything in multipart/form-data, a May 5, 2026·4 min read
JWT authentication, explained as you’d actually use itYou open an app. You log in. Then every request somehow knows who you are. That “somehow” is authentication.May 5, 2026·3 min read
Creating Routes and Handling Requests with ExpressIntroduction Once you understand how Node.js runs JavaScript and handles basic HTTP servers, the next step is making your code easier to manage. Writing everything using Node’s built-in http module quMay 4, 2026·4 min read
Setting Up Your First Node.js Application Step-by-StepIntroduction Before building APIs or full-stack apps, you need to understand how Node.js works at a basic level. This guide walks through setting up, running your first script, and creating a simple sMay 2, 2026·2 min read
Map and Set in JavaScriptIntroduction JavaScript’s default tools—Objects and Arrays—work well, but they start to break down in specific scenarios like key collisions and duplicate handling. Map and Set are designed to solve eMay 1, 2026·4 min read
How Node.js Handles Thousands of Requests with Just One ThreadIf you come from languages like Java or Python, this idea sounds wrong at first. The idea that a single thread can handle many users at the same time feels counterintuitive, almost like it should failMay 1, 2026·5 min read
