How Node.js Handles Multiple Requests with a Single ThreadSingle-threaded nature of Node.js Node.js runs your JavaScript on one main thread. There's no parallel JS execution, no two lines of your code running simultaneously. One call stack. One flow. A procMay 10, 2026·4 min read·1
What is Middleware in Express and How It WorksWhat middleware is in Express When a user sends an HTTP request to your Express app, it doesn't jump straight to your route handler. Instead, it passes through a series of checkpoints — these checkpoiMay 9, 2026·4 min read·1
Blocking vs Non-Blocking Code in Node.jsWhat blocking code means Blocking code is code that stops everything else from running until it finishes. When your program hits a blocking operation, it freezes — no other requests get processed, no May 9, 2026·5 min read·1
The Node.js Event Loop ExplainedWhat the event loop is Think of the event loop as a tireless task manager that sits in a loop, constantly asking: "Is there anything to do? No? Keep waiting. Yes? Hand it to JavaScript." While your JaMay 9, 2026·4 min read·1
Storing Uploaded Files and Serving Them in ExpressWhere uploaded files are stored When a file arrives at your server, it doesn't store itself automatically. A middleware like multer intercepts the multipart request and writes the file to disk for youMay 9, 2026·4 min read
Setting Up Your First Node.js Application Step-by-StepWhat is Node.js? Before writing a single line of code, it's worth understanding what Node.js actually is under the hood. This context will make every step clearer. Node.js is a JavaScript runtime — a May 9, 2026·2 min read
URL Parameters vs Query Strings in Express.jsWhat URL parameters are A URL parameter (also called a route parameter) is a dynamic segment embedded directly in the URL path. Think of it as a named placeholder that captures a specific value from tMay 9, 2026·3 min read·1
