Building a URL Shortener with Express & Node.js

Node.js: What Every Developer Should Know Node.js is one of the most widely used technologies for building backend applications with JavaScript. It allows developers to run JavaScript on the server and build scalable network applications. If you are working with modern web applications, here are some important Node.js concepts every developer should understand. Event-Driven Architecture Node.js uses an event-driven model where operations are triggered by events. This helps handle many requests efficiently. Non-Blocking I/O Node.js performs asynchronous operations, meaning it does not block the execution while waiting for tasks like database queries or file operations. The Event Loop The event loop is the core mechanism that allows Node.js to handle multiple operations asynchronously using a single thread. Modules Node.js applications are divided into modules. Developers can create reusable code using import and export (ES Modules) or require. NPM Ecosystem Node.js has a large ecosystem of open-source packages through npm, which helps developers build applications faster. Middleware In frameworks like Express, middleware functions process requests before they reach the final route handler. Error Handling Proper error handling is essential for building stable Node.js applications, especially in asynchronous code. Environment Variables Using environment variables helps keep sensitive information like API keys and database credentials secure. Node.js is powerful because it allows developers to build fast and scalable backend services using JavaScript. Understanding these core concepts makes it much easier to build reliable backend applications. What Node.js concept was the most challenging for you when you started learning backend development? #nodejs #backenddevelopment #javascript #webdevelopment #mernstack

Understanding the architecture behind a tech stack is just as important as writing the code. I’ve recently been exploring the inner workings of the MERN stack—how React, Node.js, Express, and MongoDB collaborate to create seamless full-stack experiences. I decided to document my findings in a beginner-friendly guide to help others visualize the data flow and server logic. If you’re looking to solidify your understanding of full-stack development, I’d love for you to check it out and share your thoughts! Read the full article on Hashnode: https://lnkd.in/gKzTFM5P #WebDevelopment #MERNStack #SoftwareEngineering #JavaScript #FullStackDeveloper #LearningToCode

⚠️ I thought using async/await = optimized backend. I was wrong. --- As a MERN developer, I used async/await everywhere. And my code looked clean 👇 👉 await query1 👉 await query2 👉 await query3 But I didn’t realize… I was slowing everything down. --- 💥 The problem: I was running independent tasks sequentially Instead of running them in parallel --- 🧠 Example: ❌ Bad: await getUser(); await getOrders(); await getPayments(); (This runs one by one) --- ✅ Better: await Promise.all([ getUser(), getOrders(), getPayments() ]); (Runs everything together ⚡) --- 📉 Real impact: • Faster response time • Better resource usage • Improved performance --- 💡 Biggest lesson: Async/await makes code readable But not always fast --- 🚀 Now I always think: • Can these tasks run in parallel? • Am I blocking execution unnecessarily? • Can I optimize async flow? --- If you're using Node.js… 👉 Don’t just write async code 👉 Write efficient async code --- Let’s connect & grow together 🤝 #MERN #NodeJS #BackendDevelopment #JavaScript #AsyncAwait #Performance #SoftwareEngineering #Developers

Just published my new article: Async Code in Node.js: Callbacks, Promises, and Async/Await Asynchronous programming is one of the most important concepts for every backend developer. While learning Node.js, I realized that understanding async flow is the key to building scalable and efficient applications. In this article, I explained: Why async code exists in Node.js How Callbacks work Problems like Callback Hell How Promises improve code structure Why Async/Await is the modern and clean approach Real-world examples with file handling Writing blogs is helping me strengthen my fundamentals while sharing knowledge with the community. Read here in Hinglish : https://lnkd.in/d675iphE (Hashnode) Read here in English : https://lnkd.in/d2WeRwyh Would love to hear your thoughts and feedback. 🙌 #ChaiAurCode #chaiCode #Nodejs #JavaScript #BackendDevelopment #WebDevelopment #SoftwareEngineering #Coding #Developers #LearningInPublic

"Small steps in learning lead to big growth." 🚀 After learning React, I explored Angular and built a simple full-stack project — PlanCraft (Content Planning Dashboard) to practice real-world development concepts. This application helps users organize and manage their day-wise content planning in a structured way. ✨ Key Highlights: • User Signup & Login Authentication • Secure password hashing using bcrypt • Add, Edit & Delete Plans (CRUD operations) • Day-wise content planning • Platform selection (LinkedIn, Instagram, Twitter, YouTube, Blog) • Status tracking (Planned, In Progress, Done) • Angular Reactive Forms with validation • Dashboard with routing & navigation • REST APIs using Node.js & Express • MySQL database integration • Toast notifications for better user experience • Clean and structured UI 🛠 Tech Stack: Angular | TypeScript | Node.js | Express | MySQL | HTML | CSS | Reactive Forms 🌐 Live Demo: https://lnkd.in/g74-eB5K 🔗 GitHub Repo: https://lnkd.in/gPz4Rc45 This project helped me understand Angular architecture, form handling, routing, and backend integration while building a complete full-stack application. #Angular #React #FullStackDeveloper #Nodejs #MySQL #WebDevelopment #FrontendDeveloper #StudentDeveloper #Projects #Learning #Vercel

Do you agree with this Roadmap🤔 The Future Roadmap of Web Development Web development is continuously evolving, and the future belongs to developers who grow with technology. Future Web Development Roadmap: ✔ Frontend Development HTML | CSS | JavaScript Responsive Design | React.js | Next.js ✔ Backend Development Python | Django | Flask APIs | Authentication | Server-side Logic ✔ Database Management MySQL | PostgreSQL | MongoDB ✔ Deployment & Version Control Git | GitHub | Netlify | Vercel ✔ Performance & Best Practices SEO | Speed Optimization | Mobile-First Design Strong fundamentals + modern frameworks = future-ready web developer. The web is changing every day, and continuous learning is the real roadmap to success. #WebDevelopment #Frontend #Backend #Python #ReactJS #Django #Shumaila #ShumailaDev #Flask #Github #DeveloperJourney #TechRoadmap

𝗧𝗼𝗽 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀(2026) Whether you're preparing for your next big opportunity or mentoring others, this list can be a game-changer. 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗯𝗮𝘀𝗲𝗱 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀 1. Implement `Promise.all` polyfill 2. Implement `Promise.any` polyfill 3. Implement `Array.prototype.reduce` polyfill 4. Implement Lodash’s `flatten` method 5. Implement auto-retry for promises 6. Throttle promises by batching 7. Debouncing implementation 8. Throttling implementation 9. Execute N callback-based async tasks in series 10. Output prediction for tricky 10–15 JavaScript snippets 11. Object vs Map differences in JavaScript 12. Difference between `PATCH` and `PUT` 13. What is the difference between debounce and throttle? 14. How does the JavaScript Engine work? 15. What is the Event Loop and how does the Microtask Queue work? 16. Explain Virtual DOM and its comparison mechanism 17. How to control tab order in DOM (explain `tabIndex`) 18. What is Event Capturing and Bubbling 19. How to override `toString` on `String.prototype` 20. What is OAuth and how does it work? 21. How does SSO work? 22. What are REST API methods and their differences? 23. Principles of Functional Programming 24. What are microservices? 𝗥𝗲𝗮𝗰𝘁-𝗦𝗽𝗲𝗰𝗶𝗳𝗶𝗰 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀 1. Why do keys matter in React and how do they improve performance? 2. Explain how `useState` works internally 3. Implement a basic version of `useState` 4. What are React Portals? How are modals mounted using them? 5. What are Error Boundaries in React? 6. How does memoization work in React? 7. SSR vs CSR with examples and use-cases 8. What is Module Federation? 9. What is Micro-Frontend Architecture? 10. Server-Side Rendering techniques to improve SEO 11. What are memory leaks in React and how to detect them? 12. How to measure performance in a React application? 13. How would you build a tool like Create React App? 14. How do you structure reusable UI components in React? ........................................................................................................................................ Follow TheVinia Everywhere Stay connected with TheVinia and keep learning the latest in Web Development, React, and Tech Skills. 🎥 YouTube – Watch tutorials, roadmaps, and coding guides 👉 https://lnkd.in/gfKgVVFf 📸 Instagram – Get daily coding tips, updates, and learning content 👉 https://lnkd.in/gK4S-ah8 💼 Telegram – Follow our journey, insights, and professional updates 👉 https://lnkd.in/gU8M8hwd 💼 Medium : https://lnkd.in/gy9iSHqv ✨ Join our community and grow your tech skills with us.

“JavaScript is single-threaded… so how does Node.js handle thousands of requests?” This confused me for a long time. The short answer: it doesn't do everything itself. Node.js uses something called the event loop to stay fast and scalable. Here's the simple mental model 👉 JavaScript runs on a single main thread 👉 But it doesn' wait for slow operations When a task like: • API call • Database query • File read comes in… ➡️ It's offloaded to the system (via the event loop / background workers) ➡️ The main thread keeps moving forward ➡️ When the result is ready, it gets picked up and processed Why this feels fast Nothing is blocking the main thread. So instead of doing: "Do task → wait → next task" Node does: "Start task → move on → come back when ready" What this unlocks ✔ Handles thousands of concurrent requests ✔ Efficient for I/O-heavy apps (APIs, streaming, real-time systems) ✔ Better resource utilization Important nuance Node.js is not magically multi-threaded for your code. It's non-blocking, not parallel (by default). Heavy CPU tasks can still slow it down— but for most web workloads, this model works extremely well. Why it's still so popular Despite newer languages like Go or Java offering different models: 👉 JavaScript has a massive ecosystem 👉 Full-stack development becomes easier 👉 With TypeScript, it's become even more robust The takeaway Node.js wins not because it's single-threaded— but because it doesn't waste time waiting. Comment, Share,♻️ Repost it to your network if you liked and follow Daniyaal Saifee Nayeem for more.

🚀 How to Start MERN Stack Development (Beginner Guide) Want to become a full-stack developer using just JavaScript? Start with MERN 👇 🔹 What is MERN? MongoDB + Express + React + Node.js → One language (JavaScript) for frontend & backend 💡 Step-by-Step Path: 1️⃣ Learn Basics ✔ HTML, CSS ✔ JavaScript (ES6, async/await, arrays) 2️⃣ Backend First ✔ Node.js fundamentals ✔ Express.js (APIs, routing, middleware) 3️⃣ Database ✔ MongoDB + Mongoose ✔ CRUD operations 4️⃣ Frontend ✔ React (components, hooks) ✔ API integration 5️⃣ Connect Everything React → API → Backend → Database → Response 6️⃣ Build Projects (Most Important 🚨) ✔ Todo App ✔ Blog App ✔ Auth System ✔ E-commerce (advanced) 🛠 Tools to Learn: Git • GitHub • Postman • VS Code 🚀 Deployment: Frontend → Vercel Backend → Render Database → MongoDB Atlas ⚡ Pro Tip: Don’t just watch tutorials. Build projects. Break things. Fix them. Repeat. Start simple. Stay consistent. That’s how you win 💯 #MERN #WebDevelopment #JavaScript #FullStack #Developers #Coding

💻 One thing I learned during my web development journey: Writing code is not the hardest part. Understanding why something breaks teaches more than when it works perfectly. As a MERN Stack Developer, many times I spent hours fixing small issues — API errors, state bugs, database connections, deployment problems... But every bug solved added one more level of confidence. Today I believe: ✅ Every error improves logic ✅ Every project teaches architecture ✅ Every challenge builds patience Still learning. Still building. Still improving every day 🚀 What was one bug or coding issue that taught you the most? #WebDevelopment #MERNStack #ReactJS #NodeJS #MongoDB #JavaScript #DeveloperJourney #CodingLife #TechCommunity