How to boost Node.js performance with C++ code

🚀 Just learned how to create a simple HTTP server using Node.js! In this mini project, I built a server that handles client requests and logs each request into a file using the fs (File System) module. It was amazing to see how Node.js manages non-blocking I/O operations so efficiently! ⚙️ 🧩 Concepts I learned: ✅ Creating a basic server with the http module ✅ Handling requests and responses ✅ Using the fs module to log data asynchronously ✅ Understanding how the Node.js event loop works #NodeJS #BackendDevelopment #WebDevelopment #JavaScript #LearningJourney #Coding

🚀 Episode 02: JavaScript on the Server! 🧠 Today, I explored how JavaScript—once a purely client-side language—made its way to the server-side with the help of Node.js. 💻 Here are some key takeaways from this episode: 🔹 A server is basically a remote computer that provides resources or services over a network. 🔹 IP Address uniquely identifies every device on the internet. 🔹 V8 Engine, written in C++, powers JavaScript by compiling it into machine code, making it super fast! ⚡ 🔹 Node.js is a C++ application that embeds the V8 engine, enabling JavaScript to run outside the browser. 🔹 Node.js follows ECMAScript standards, but also extends JavaScript with additional capabilities like APIs, database connections, and server operations — making it a full JS runtime environment. Ever wondered how your JavaScript code “comes to life”? 🤔 The V8 engine translates your high-level JS code into low-level machine instructions — the actual language your computer understands. That’s how your code becomes action! 🧩 #JavaScript #NodeJS #WebDevelopment #LearningJourney #V8Engine #ServerSideJS #MERNStack #Coding

🚀 Did you know? Node.js is single-threaded for your JavaScript code — but multi-threaded under the hood ⚙️ 🧠 Here’s how it works: JavaScript itself runs on one main thread — the Event Loop. But Node.js uses a C library called libuv, which provides a thread pool for handling heavy I/O tasks like file access, crypto, or DNS lookups. So while your JS code is single-threaded, Node.js quietly spins up multiple native threads to do the heavy lifting in the background 💪 👷♂️ What about Worker Threads? If you ever have CPU-bound tasks (like image processing or data crunching) that block the Event Loop , you can manually create Worker Threads in Node.js to run code in parallel on different threads 🧵 Each worker: Runs its own JS instance (with its own event loop) Can communicate with the main thread via messages Helps you fully utilize multi-core CPUs 🚀 💡 Takeaway: Node.js gives you the best of both worlds: ✅ Simplicity of single-threaded JS ⚡ Power of multi-threaded performance when you need it #Nodejs #JavaScript #BackendDevelopment #AsyncProgramming #libuv #WorkerThreads #WebDevelopment #CodingTips #Performance #EventLoop #letsLearnWithPrateek #Day9

🚀 Episode 03: Writing Code with Node.js! 💻 In this episode, I finally got hands-on with Node.js — moving from concepts to actual coding! ⚙️ Here’s what I learned and practiced: 🔹 Installed Node.js from nodejs.org and verified it using node -v and npm -v. 🔹 Explored Node REPL (Read-Eval-Print-Loop) — an interactive way to write and test JavaScript directly in the terminal. 🔹 Created my first Node.js file (app.js) in VS Code and ran it using node app.js. 🔹 Understood Global Objects in Node.js — unlike browsers that use the window object, Node.js uses a global object. 🔹 Discovered that globalThis (introduced in ECMAScript 2020) provides a universal way to access the global scope in any environment. 💡 It’s fascinating to see how Node.js bridges JavaScript from the browser to the server and brings so much power to the backend world! #NodeJS #JavaScript #BackendDevelopment #LearningJourney #MERNStack #WebDevelopment #Coding #V8Engine #GlobalObject

🧠 "When in doubt, log it out!" 🧩 Why Logging Is a Developer’s Silent Superpower Logs aren’t just for debugging — they’re your application’s black box recorder. When something goes wrong in production, structured logs can tell you what happened, where, and why — even when you’re not watching. Using tools like Winston in #NodeJS or #NestJS, you can: ✅ Track real-time application behavior ✅ Catch silent failures before they turn into major issues ✅ Measure performance and request times ✅ Maintain clean, leveled logs (info, warn, error) for better observability A well-implemented logging system turns guesswork into clarity — it’s the difference between finding the bug and hoping it shows itself. I use Winston logger across my Node.js and NestJS projects to maintain clarity, structure, and traceability throughout the entire request-response flow. It has become an essential part of my backend workflow for building reliable systems. #NodeJS #NestJS #BackendDevelopment #Winston #Logging #Winston #Debugging #CleanCode #ErrorHandling #JavaScript #ServerSide #Observability #ServerMonitoring #JavaScript #CodeTips #SoftwareDevelopment #SoftwareEngineering #Debugging #DevelopersJourney #DailyDevPost

🚀 Understanding Callbacks in Node.js Have you ever noticed that some tasks in Node.js, like reading files or calling APIs, don’t block other code from running? 🤔 That’s where callbacks come in. A callback is simply a function passed as an argument to another function, which gets executed once a task is complete. It’s the foundation of asynchronous programming in Node.js — allowing your app to continue executing without waiting. For example, when you read a file, Node.js doesn’t stop everything until the file is ready; it continues other work and runs the callback when the data arrives. This makes Node.js fast and efficient for I/O-heavy operations. However, using too many nested callbacks can lead to callback hell, which is why developers now prefer Promises and Async/Await for cleaner, more readable code. ⚡ 💭 What’s your go-to way of handling async tasks — sticking with callbacks or moving to Promises? #NodeJS #JavaScript #BackendDevelopment #WebDevelopment #AsyncProgramming #Learning

#Day2 | Node.js Deep Dive | Module System ExplainedToday, I explored the NodeJS GitHub repo and unlocked how modules actually work behind the scenes – thanks to Akshay Saini sir’s amazing course! 🔍 Key Takeaways: Every module’s code in Node.js runs inside its own function scope using an Immediately Invoked Function Expression (IIFE), just like how function scopes work in JavaScript. This keeps variables & functions private to the module! To share code between files, Node.js gives us the module.exports object inside every module. Export what you want, and access it via require() in other files. require() process: Resolves the path Loads & wraps code in IIFE Evaluates & sets up module.exports Caches the result for best performance! Thanks to this process, we avoid global variable pollution and keep code modular, efficient & easy to maintain. Understanding these fundamentals is crucial for building scalable Node.js apps. Thank you, Akshay Saini, for making complex concepts so clear! #Nodejs #JavaScript #Backend #LearningJourney #100DaysOfCode #Modules #Scope #AkshaySaini

Diving deeper into Node.js, I explored how modules work behind the scenes. I started by learning the difference between CommonJS and the newer ES Modules (ESM) — two different systems for organizing and sharing code in JavaScript. Then I looked into how modules actually work internally. It turns out that each module in CommonJS is wrapped inside an Immediately Invoked Function Expression (IIFE). I learned how module.exports and require work behind the scenes — how module and exports are passed as parameters into the IIFE. Finally, I explored the require process: 1️⃣ Resolve the module path 2️⃣ Load the module 3️⃣ Compile it (wrap inside IIFE) 4️⃣ Evaluate the code 5️⃣ Cache the module for reuse It was a fantastic deep dive into how Node.js handles modules — and a real “aha!” moment understanding how it all works under the hood. #NodeJS #JavaScript #CommonJS #ESModules #BackendDevelopment #WebDevelopment#LearnInPublic Akshay Saini 🚀

💻 𝐖𝐡𝐲 𝐝𝐨𝐞𝐬 𝐞𝐯𝐞𝐫𝐲𝐨𝐧𝐞 𝐮𝐬𝐞 𝘭𝘰𝘤𝘢𝘭𝘩𝘰𝘴𝘵:3000? Ever wondered why 𝘦𝘷𝘦𝘳𝘺 tutorial, project, and developer* seems to spin up their app on port 3000? 🤔 Let’s rewind a bit 👇 When Node.js came into the scene, developers started using frameworks like 𝐄𝐱𝐩𝐫𝐞𝐬𝐬 and later 𝐑𝐞𝐚𝐜𝐭. By default: • 𝐄𝐱𝐩𝐫𝐞𝐬𝐬 examples used port 3000 in docs 🧩 • 𝐑𝐞𝐚𝐜𝐭 (𝐜𝐫𝐞𝐚𝐭𝐞-𝐫𝐞𝐚𝐜𝐭-𝐚𝐩𝐩) also picked 3000 as its default dev server port ⚙️ • So it became the 𝘥𝘦 𝘧𝘢𝘤𝘵𝘰 “developer port” — simple, round, and always free. Other popular ones: • 8080 → for backend servers (used by Java/Apache) • 5000 → Flask (Python) • 5173 → Vite 🚀 • 4200 → Angular • 5500 → Live Server (VS Code) So, localhost:3000 became the 𝐡𝐨𝐦𝐞 𝐚𝐝𝐝𝐫𝐞𝐬𝐬 𝐨𝐟 𝐦𝐨𝐝𝐞𝐫𝐧 𝐰𝐞𝐛 𝐝𝐞𝐯𝐬 — a little piece of history that stuck around because it “just works.” 🧠 Fun fact: Ports range from 0–65535. Only ports below 1024 need admin rights — that’s why we start from 3000+! Next time you hit 𝘭𝘰𝘤𝘢𝘭𝘩𝘰𝘴𝘵:3000, you’re opening a small window into web dev history 👩💻👨💻 — 𝐏𝐚𝐯𝐢𝐭𝐡𝐫𝐚 𝐒𝐡𝐚𝐫𝐦𝐚 ✨ #WebDevelopment #NodeJS #ReactJS #DeveloperLife #LearnInPublic #MERN #Frontend

Ever added custom properties to the request object in Express — only to realize that TypeScript doesn’t recognize them? 😅 Your app runs perfectly fine, but you lose all that sweet IntelliSense and type safety that TypeScript promises. In this video, I’ll walk you through how to properly extend the native Express Request object so TypeScript knows about your custom properties — giving you full autocomplete and error checking in your code. 💪 If you’ve ever done something like req.user = ... or req.sessionData = ... in your middleware and wondered why TypeScript doesn’t get it — this one’s for you! #TypeScript #ExpressJS #NodeJS #BackendDevelopment #WebDevelopment #Coding #SoftwareEngineering #JavaScript #TypeSafety