Storing Uploaded Files and Serving Them in ExpressUploading files is only one part of the process. After a file reaches the server, another important question appears: “Where should the uploaded file actually be stored?” Applications like: InstagrMay 10, 2026·8 min read·1
What is Middleware in Express and How It WorksAfter learning routes in Express, the next important concept is middleware. At first, middleware may sound complicated because the word itself feels technical. But the actual idea is surprisingly simpMay 10, 2026·7 min read·1
Creating Routes and Handling Requests with ExpressAfter learning basic Node.js servers, one thing quickly becomes obvious: Building everything manually using the built-in http module can become repetitive and messy. Even simple things like: handlingMay 10, 2026·7 min read·1
Sessions vs JWT vs Cookies: Understanding Authentication ApproachesWhenever you log into a website and stay logged in even after refreshing the page, some form of authentication system is working behind the scenes. Modern applications need a way to: identify users May 10, 2026·8 min read·1
The Node.js Event Loop ExplainedIf there is one concept that truly defines how Node.js works internally, it is the Event Loop. You’ll hear developers say things like: “Node.js is event-driven” “The event loop handles async operatiMay 9, 2026·7 min read·2
How Node.js Handles Multiple Requests with a Single ThreadOne of the most confusing things beginners hear about Node.js is this: “Node.js is single-threaded, but it can still handle thousands of requests.” At first, this sounds impossible. Most people assuMay 9, 2026·8 min read·2
Blocking vs Non-Blocking Code in Node.jsOne of the biggest reasons Node.js became popular is its ability to handle multiple tasks efficiently without getting stuck waiting for slow operations. If you’ve heard phrases like: asynchronous proMay 9, 2026·8 min read·2