Node.js Event Loop Explained in 5 Minutes

🚀 Day 3 – Exploring Node.js Internals Continuing my backend journey with the Namaste Node.js series. Today I completed up to Episode 05 – Diving into the Node.js GitHub Repository. Key takeaways: • Node.js is built on top of Google’s V8 engine, but its core also includes C++ bindings and internal modules. • The Node.js codebase is a mix of JavaScript and C++, enabling high performance and low-level system access. • Core modules (like fs, http, etc.) are implemented internally and exposed to developers. • Understanding the repository structure gives clarity on how Node.js actually works behind the scenes. • It reinforced that real engineering goes beyond using tools — it’s about understanding their internals. As a frontend developer, this shift from “using Node.js” to “understanding how it’s built” is helping me think more like a complete engineer. Small steps toward becoming a stronger Full-Stack Developer. #NodeJS #BackendDevelopment #JavaScript #FullStackJourney #SoftwareEngineering #LearningInPublic

I still remember my first time seeing nested callbacks in Node.js. It looked like a sideways pyramid of doom. 📐 If you’re learning backend development, async code is usually the first big hurdle. But here’s the truth: once you understand *why* Node.js does things asynchronously, it stops feeling like magic and starts feeling like a superpower. I just published a beginner-friendly guide that walks through: 🔹 Why Node.js is single-threaded but non-blocking 🔹 How callbacks actually execute under the hood 🔹 Why “callback hell” happens (and how to avoid it) 🔹 Promises: the cleaner, modern alternative No jargon. Just clear examples, step-by-step breakdowns, and side-by-side code comparisons. 📖 Read it here: https://lnkd.in/g4Tk-yDg What part of async JS confused you the most when you started? Let’s chat in the comments. 👇 #NodeJS #JavaScript #WebDevelopment #BackendDev #CodingJourney

🚀 Learning Backend Development with Node.js Today, I started my journey into backend development and explored Node.js. Here’s what I learned: ✅ What Node.js is and how it allows JavaScript to run outside the browser ✅ Basic understanding of how backend works (Request → Server → Response) ✅ Ran my first Node.js program 🎉 ✅ Explored REPL (Read, Eval, Print, Loop) for quick testing ✅ Practiced basic concepts like variables, functions, and setTimeout 💡 Key takeaway: Node.js uses a non-blocking, asynchronous approach, making it powerful for building scalable applications. 📌 Next step: Diving deeper into building servers and learning frameworks like Express.js. #NodeJS #BackendDevelopment #JavaScript #LearningJourney #100DaysOfCode

🚀 Day 4 of My Backend Development Journey Today, I explored the fundamentals of Node.js and understood how backend actually works at a deeper level. 🔹 Key Concepts I Learned: - What is Node.js and how it allows JavaScript to run on the server - Understanding modules and why they are used - Using require() to import modules - Introduction to HTTP module to create a basic server This helped me understand how servers handle requests and send responses without using any framework. Building strong fundamentals step by step 💻 #backenddevelopment #nodejs #learning #codingjourney #webdevelopment

Day 2 of my backend development journey 🚀 Today I went deeper into Node.js and built a basic HTTP server from scratch (without using any frameworks). Here’s what I worked on: * Created multiple routes (/home, /about, /contact) * Built my first API endpoint (/api/users) returning JSON * Learned the difference between request (req) and response (res) * Understood why res.end() is essential in sending responses * Debugged issues like incorrect function usage (toLowerCase vs toLowerCase()) One thing I’m starting to appreciate is how backend development is more about logic, flow, and structure than visuals. It’s challenging, but also very rewarding when things finally work. Next step: moving into Express.js and understanding how it simplifies all of this. #BackendDevelopment #NodeJS #LearnInPublic #WebDevelopment

Building with NestJS has been one of the best decisions in my backend journey. Over the last few months, I’ve been focused on creating clean, scalable APIs with: TypeScript first architecture modular feature-based structure robust auth flows (JWT, guards, middleware) reusable services and repository patterns cleaner error handling and API logging What I like most about NestJS is how it brings structure to fast-moving backend development without slowing delivery. Still learning, still shipping, and enjoying the process. If you're building serious backend systems in Node, NestJS is definitely worth exploring. #NestJS #NodeJS #TypeScript #BackendDevelopment #SoftwareEngineering #API #WebDevelopment #CodingJourney

React Native devs — your FlatList is gaslighting you. You update your state. Your component re-renders. But the list? Completely unbothered. Same stale UI. No changes. Nothing. Sound familiar? The fix is a single prop you're probably not using: extraData. In my latest post, I break down: ✅ Why FlatList ignores your state updates ✅ What extraData actually does (and doesn't do) ✅ The mistakes that tank your list performance ✅ Real code examples — broken vs. fixed If you've ever lost 2 hours to a list that wouldn't re-render, this one's for you. 🔗 [Link in comments]

Confession: I'm a React/Next.js expert... but a beginner at backend. 🧠 And I'm okay with that. For 2+ years, I focused on: 🔹 Responsive, accessible UIs 🔹 State management (Redux, Context, RTK Query) 🔹 Performance optimization & SSR 🔹 Clean component architecture Now I'm learning NestJS, PostgreSQL, and authentication flows. What's helping me: Building small APIs for my frontend projects Reading backend code from senior devs Breaking things on purpose (then fixing them) To every frontend dev afraid of backend: Start small. You don't need to know everything at once. Any backend tips for a motivated learner? 🙏 #FrontendDeveloper #ReactJS #NextJS #CodingJourney #FullStackLearning

Node.js has been the backbone of backend JS for 15 years.  But in 2026, something shifted.  Bun now has 7.2M+ monthly downloads. 88K GitHub stars.  Companies like Stripe, Midjourney, and Anthropic  are running it in production.  The benchmarks look insane:  → 2.4x faster HTTP handling  → Package installs 6-9x faster than npm  → Built-in test runner, bundler, and TypeScript support  So... is Node.js dead?  Here's what nobody tells you:  When you test REAL apps — with databases, auth,  and actual business logic — both runtimes hit  roughly the same ~12,000 requests per second.  That 2.4x gap? It only exists in Hello World benchmarks.  Node.js still has:  • 100x more production usage  • 15 years of battle-tested stability  • The largest package ecosystem ever built  • A new LTS-every-release schedule starting 2026  My honest take as a full stack developer:  Bun is incredible for new projects, CLI tools,  and teams who want speed + simplicity out of the box.  Node.js is still the safer bet for enterprise systems  and complex production environments.  The real question isn't "which is better."  It's "which is right for YOUR next project."  So tell me — Node.js or Bun for your next project?  Drop your pick in the comments. 👇  #FullStackWithArup #NodeJS #BunJS #JavaScript #WebDevelopment #BackendDevelopment #BuildInPublic

Something I tell every client before we start: "Clean code now saves you money later." I've seen projects where a developer built something fast, handed it over, and disappeared. Six months later the client needs a small change and nobody can understand the codebase. I write code that another developer can open and understand without a manual. Not because it's a nice-to-have — because your product needs to be able to grow. Every project I deliver comes with clean structure, proper documentation, and a system that can scale. That's the standard I hold myself to. #cleancode #webdevelopment #fullstack #nodejs