Blocking vs Non-Blocking Code in Node.js

Hello readers 👋, welcome to the 5th blog of our Node.js Series! In the last post, we unpacked the event loop and saw how it keeps Node.js responsive by juggling callbacks. Today we are going to look at a concept that directly affects performance: blocking vs non-blocking code . Understanding this difference is the key to writing fast, scalable Node.js applications. It's not just academic; it shows up every time you read a file or query a database. We'll start with simple definitions, use everyd