Blocking vs Non-Blocking Code in Node.js One of the biggest reasons Node.js became popular is this phrase: “Node.js is non-blocking.” And beginners usually react with: “Okay… sounds important.” “But what exactly is being blocked?” Fair question. Because terms like: blocking non-blocking asynchronous event loop often get explained in ways that sound more confusing than helpful. So in this article, we will understand: what blocking code actually means what non-blocking code means why blocking hurts server performance how Node.js handles async operations real-world examples using file handling and database calls And yes, we are going to use real-life analogies because software concepts become much easier once humans stop explaining them like robot manuals. First Understand: What Does “Blocking” Mean? Blocking simply means: “Execution has to wait.” The program cannot continue until current task finishes. Imagine standing in line at a small shop.…