Boost Backend Skills with Revised Node.js Concepts

This diagram shows how a client sends a request, how the Node.js server processes it, and how the response is sent back. Node.js allows JavaScript to run on the server and handle multiple requests efficiently using a non-blocking approach. Save this post if you’re learning backend development. #NodeJS #BackendDevelopment #WebDevelopment #JavaScript #ProgrammingConcepts #LearnToCode #SoftwareDevelopment #TechLearning

Most beginners struggle with Node.js not because it’s hard, but because core concepts are misunderstood or skipped. Async flow, request/response cycles, middleware, and error handling form the foundation of Node — and everything breaks without them. Understanding why these concepts exist makes Node feel logical instead of confusing. Next post: Before building APIs in Node, understand this #nodejs #javascript #webdevelopment #learninginpublic #beginners #backend

Just Published on Medium: Understanding Node.js & Express.js If you’ve ever wondered what Node.js actually is, how Express fits into backend development, or how modern APIs really work behind the scenes, I’ve broken it all down in one clean, beginner-friendly article. 👉 Read the full article here: https://lnkd.in/gK_ZHRvt #NodeJS #ExpressJS #BackendDevelopment #WebDevelopment #MERN #JavaScript #APIs #SoftwareEngineering #LearningInPublic

Event loop in NodeJS ? 🧠 Call Stack – where JS runs your code line by line. 📦 Web APIs / Node APIs – handle async stuff like setTimeout, fetch, etc. 📬 Callback Queue (Task Queue) – stores async callbacks waiting to run. 🔁 Event Loop – constantly checks if the stack is empty, and if yes, moves queued tasks back into it. Flow: - Synchronous code block the call stack, so it run first. - When it encounters async function (setTimeout, file I/O or HTTP request) it is send to Web APIs, which handle the operation in background. - The Call Stack does not wait for async function to finish and it moves to next line immediately. - Once the Call Stack is empty, the event loop first checks Microtask Queue (Promises, Process.NextTick). - Finally, the Event Loop process the Callback Queue(e.g., setTimeout, file I/O callbacks). #JavaScript #NodeJS #BackendDevelopment #AsyncProgramming #WebDevelopment #MERNStack #EventLoop #CleanCode #SoftwareEngineering #100DaysOfCode

⚛️ React Hooks – The Power Behind Modern Frontend Hooks changed how we write React. No classes. No complexity. Just clean, powerful functional components. State. Lifecycle. Global data. All handled with hooks. Modern React runs on hooks. #ReactJS #Frontend #JavaScript #WebDevelopment #MERN #Tech

Node.js – Day 7/30 Call Stack, Callback Queue & Microtask Queue To really understand how async code works in Node.js, it’s important to know what happens behind the scenes. Call Stack o) Executes synchronous code o) Runs one function at a time o) Must be empty before async callbacks are executed Callback (Task) Queue o) Holds callbacks from async operations like setTimeout and I/O o) These are executed after the call stack is clear Microtask Queue o) Holds promise callbacks (.then, catch, finally) o) Has higher priority than the callback queue Execution order: 1). Call Stack 2). Microtask Queue 3). Callback Queue This explains why promise-based code often runs before timers. #NodeJS #EventLoop #JavaScript #BackendDevelopment #LearningInPublic

Bun vs Node.js 👀 The JavaScript performance conversation is changing. ⚡ ~98,000 requests/sec vs Node’s ~36,000 🧠 ~66% lower peak memory usage in comparable workloads 📦 Up to 30× faster package installs with global caching + native hardlinks 🟦 Native TypeScript & JSX support out of the box 🧰 Runtime + bundler + package manager in one fast binary Node.js is still rock-solid, battle-tested, and everywhere. But Bun is clearly pushing the limits on speed, DX, and simplicity. Benchmarks vary by workload, but the trend is hard to ignore: Bun is fast — especially for modern backends and tooling-heavy projects. Curious to hear from the community: Are you experimenting with Bun already, planning a migration, or sticking with Node for now? ⚡ Team Bun 🛤️ Team Node #BunJS #NodeJS #JavaScript #Backend #WebDevelopment #TypeScript #Performance #DevTools

🚀 What is Node.js — and why backend developers care 🧩 Node.js is a JavaScript runtime that allows JavaScript to run outside the browser. Under the hood, Node.js uses Chrome’s V8 engine to execute JavaScript code — the same engine that powers Google Chrome. 🔍 What this means in practice • JavaScript is compiled to machine code • Execution is fast and efficient • Frontend and backend can share the same language ⚙️ Why Node.js became popular for APIs • Designed for non-blocking I/O • Handles many requests efficiently • Perfect fit for APIs and microservices 🎯 Key insight Node.js isn’t a framework. It’s a runtime that changed how JavaScript is used. #Nodejs #Javascript #Backenddevelopment #Webdevelopment #LearningByDoing

🚀 Just created a beginner-friendly Node.js Complete Guide covering core concepts and how to move towards Express.js framework for backend development! In this guide, I’ve explained: ✅ What is Node.js & why it’s popular ✅ Client-side vs Server-side (Node.js concept) ✅ How Node.js works internally (Event Loop, V8 Engine, Non-blocking architecture) 📌 After learning these Node.js basics, the next step is Express.js — a powerful Node.js framework used to: ✔ Build APIs ✔ Handle routes easily ✔ Manage backend logic efficiently This roadmap helps beginners smoothly move from JavaScript → Node.js → Express.js → Backend Development. #NodeJS #ExpressJS #BackendDevelopment #JavaScript #WebDevelopment #LearningJourney #MERNStack #DjangoToNode #TechSkills #RiyaSharma

𝗕𝘂𝗻 𝘃𝘀 𝗡𝗼𝗱𝗲.𝗷𝘀: 𝗜𝘀 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗘𝗻𝘁𝗲𝗿𝗶𝗻𝗴 𝗮 𝗡𝗲𝘄 𝗘𝗿𝗮? The JavaScript backend ecosystem is evolving fast — and Bun has entered the conversation in a big way. So how does it really compare with Node.js? 𝗡𝗼𝗱𝗲.𝗷𝘀 Node.js has been the backbone of JavaScript backend development for years. Powered by the V8 engine, backed by a massive ecosystem, and trusted in production at scale. Stable, battle-tested, and still the default choice for most teams. 𝗕𝘂𝗻 Bun is a modern runtime built for speed. It ships with a fast JavaScript engine, built-in TypeScript support, an integrated bundler, and a lightning-fast package manager — all in one tool. The focus is clear: performance, simplicity, and developer experience. 💡 The real question isn’t “Bun vs Node” It’s when and where to use each. Node.js → reliability, ecosystem, enterprise adoption Bun → speed, modern tooling, rapid development The future may not replace Node.js — but Bun is definitely pushing the JavaScript backend forward. #BunJS #NodeJS #JavaScript #BackendDevelopment #WebDevelopment #FullStackDeveloper #TechTrends #SoftwareEngineering