Switching to TanStack React Query for MERN Stack API Management

⚠️ 𝟱 𝗠𝗶𝘀𝘁𝗮𝗸𝗲𝘀 𝗜 𝗠𝗮𝗱𝗲 𝗪𝗵𝗶𝗹𝗲 𝗙𝗲𝘁𝗰𝗵𝗶𝗻𝗴 𝗗𝗮𝘁𝗮 𝗶𝗻 𝗥𝗲𝗮𝗰𝘁 When I first started building React apps, I genuinely thought data fetching was simple. useEffect + fetch + setState = Done. If it worked… I moved on. But as my projects grew, so did the hidden problems. That’s when I realized — I wasn’t just writing code. I was creating technical debt. Here are 5 mistakes that changed how I think about data in React 👇 1️⃣ 𝗧𝗿𝗲𝗮𝘁𝗶𝗻𝗴 𝗦𝗲𝗿𝘃𝗲𝗿 𝗦𝘁𝗮𝘁𝗲 𝗟𝗶𝗸𝗲 𝗖𝗹𝗶𝗲𝗻𝘁 𝗦𝘁𝗮𝘁𝗲 I was using useState for everything. But server data isn’t something we own. It lives on the backend. It needs: • Caching • Syncing • Retry logic • Freshness control That’s a completely different responsibility. 𝟮️⃣ 𝗜𝗴𝗻𝗼𝗿𝗶𝗻𝗴 𝗖𝗹𝗲𝗮𝗻𝘂𝗽 I didn’t cancel API requests properly. Later I learned this can cause: • Memory leaks • Race conditions • State updates after unmount Small oversight. Big consequences. 3️⃣ 𝗥𝗲𝘄𝗿𝗶𝘁𝗶𝗻𝗴 𝘁𝗵𝗲 𝗦𝗮𝗺𝗲 𝗟𝗼𝗴𝗶𝗰 𝗘𝘃𝗲𝗿𝘆𝘄𝗵𝗲𝗿𝗲 Loading state. Error handling. Retry logic. Repeated in multiple components. That’s not scalability — that’s duplication. 4️⃣ 𝗡𝗼 𝗖𝗮𝗰𝗵𝗶𝗻𝗴 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝘆 Every mount triggered a new request. Even if the data hadn’t changed. Unnecessary network calls. Poor performance. Worse user experience. 𝟱️⃣ 𝗠𝗶𝘅𝗶𝗻𝗴 𝗨𝗜 𝗟𝗼𝗴𝗶𝗰 𝘄𝗶𝘁𝗵 𝗗𝗮𝘁𝗮 𝗟𝗼𝗴𝗶𝗰 Massive components. Hard to test. Hard to maintain. And honestly… exhausting to work with. 💡 𝗪𝗵𝗮𝘁 𝗖𝗵𝗮𝗻𝗴𝗲𝗱 𝗳𝗼𝗿 𝗠𝗲? I stopped thinking: “How do I fetch this?” And started asking: • Who owns this data? • Is this client or server state? • Does this need caching? • What happens if it fails? Once I separated responsibilities, my components became smaller. My code became cleaner. My apps became more predictable. 👇 I’ve attached one of my earlier implementations below. It worked — but today, I would structure it very differently. Frontend isn’t just about making something work. It’s about building something that can grow. What’s one lesson React taught you the hard way? 👀 #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #LearningInPublic #ReactQuery

𝗪𝗵𝘆 "𝗦𝗶𝗺𝗽𝗹𝗲" 𝗙𝗿𝗼𝗻𝘁-𝗘𝗻𝗱 𝘁𝗮𝘀𝗸𝘀 𝗮𝗿𝗲 𝘁𝗵𝗲 𝘂𝗹𝘁𝗶𝗺𝗮𝘁𝗲 𝗠𝗘𝗥𝗡 𝗯𝗼𝘀𝘀 𝗳𝗶𝗴𝗵𝘁. 🛡️ We’ve all been there. 𝗧𝗵𝗲 𝗣𝗹𝗮𝗻: "I’ll just fetch the data from the Express API, map it through a React component, and call it a day. 30 minutes, tops. 𝗧𝗵𝗲 𝗥𝗲𝗮𝗹𝗶𝘁𝘆:* 𝗧𝗵𝗲 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: Returns a nested object structure that looks like a 4-dimensional maze. 𝗧𝗵𝗲 𝗦𝘁𝗮𝘁𝗲: Redux/Zustand decides it’s a good time for a "re-render loop" party. 𝗧𝗵𝗲 𝗖𝗦𝗦: A single z-index: 999 from a legacy component is suddenly holding the entire UI hostage. 𝗧𝗵𝗲 "𝗙𝘂𝗻": Spending 2 hours debugging a typo in a .env variable. 𝗧𝗵𝗲 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗵𝗶𝗳𝘁: As a Senior Developer, I’ve realized the solution isn't just "coding faster." It’s about 𝗽𝗿𝗲𝗱𝗶𝗰𝘁𝗶𝘃𝗲 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲:: 𝗦𝘁𝗿𝗶𝗰𝘁 𝗧𝘆𝗽𝗶𝗻𝗴: Using TypeScript to catch those "undefined" errors before they even reach the browser. 𝗠𝗲𝗺𝗼𝗶𝘇𝗮𝘁𝗶𝗼𝗻: Knowing when to use useMemo and when you're just over-complicating things. 𝗚𝗿𝗮𝗰𝗲𝗳𝘂𝗹 𝗛𝗮𝗻𝗱𝗹𝗶𝗻𝗴:Building for the "Loading" and "Error" states first, not as an afterthought. MERN isn't just about the stack; it's about managing the chaos between the database and the user’s eyeballs. 𝗙𝗲𝗹𝗹𝗼𝘄 𝗱𝗲𝘃𝘀: 𝗪𝗵𝗮𝘁’𝘀 𝘁𝗵𝗲 "𝗾𝘂𝗶𝗰𝗸 𝗳𝗶𝘅" 𝘁𝗵𝗮𝘁 𝗲𝗻𝗱𝗲𝗱 𝘂𝗽 𝘁𝗮𝗸𝗶𝗻𝗴 𝘆𝗼𝘂𝗿 𝗲𝗻𝘁𝗶𝗿𝗲 𝗙𝗿𝗶𝗱𝗮𝘆? 👇 #MERNStack #ReactJS #FrontEndDevelopment #WebDevLife #CodingProblems #SeniorDeveloper

⚡ 𝗪𝗵𝘆 𝗥𝗲𝗮𝗹 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗨𝘀𝗲 𝗥𝗲𝗮𝗰𝘁 𝗤𝘂𝗲𝗿𝘆 𝗜𝗻𝘀𝘁𝗲𝗮𝗱 𝗼𝗳 𝘂𝘀𝗲𝗘𝗳𝗳𝗲𝗰𝘁 In my previous posts, I handled API calls using 𝘂𝘀𝗲𝗘𝗳𝗳𝗲𝗰𝘁 + 𝘂𝘀𝗲𝗦𝘁𝗮𝘁𝗲. I also used to think that was enough 😅 But when projects start growing, things get complicated very fast. Because managing API data manually means handling: • 𝗟𝗼𝗮𝗱𝗶𝗻𝗴 𝘀𝘁𝗮𝘁𝗲 • 𝗘𝗿𝗿𝗼𝗿 𝘀𝘁𝗮𝘁𝗲 • 𝗥𝗲𝘁𝗿𝘆 𝗹𝗼𝗴𝗶𝗰 • 𝗖𝗮𝗰𝗵𝗶𝗻𝗴 • 𝗥𝗲𝗳𝗲𝘁𝗰𝗵𝗶𝗻𝗴 𝘄𝗵𝗲𝗻 𝘂𝘀𝗲𝗿 𝗿𝗲𝘁𝘂𝗿𝗻𝘀 • 𝗞𝗲𝗲𝗽𝗶𝗻𝗴 𝗱𝗮𝘁𝗮 𝗳𝗿𝗲𝘀𝗵 That’s a lot of responsibility for just useEffect. 🤔 𝗦𝗼 𝘄𝗵𝗮𝘁 𝗵𝗮𝗽𝗽𝗲𝗻𝘀 𝗶𝗻 𝗿𝗲𝗮𝗹-𝘄𝗼𝗿𝗹𝗱 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀? Most production-level React apps don’t manage server data manually. They use tools like 𝗥𝗲𝗮𝗰𝘁 𝗤𝘂𝗲𝗿𝘆 (𝗧𝗮𝗻𝗦𝘁𝗮𝗰𝗸 𝗤𝘂𝗲𝗿𝘆). Why? 𝗕𝗲𝗰𝗮𝘂𝘀𝗲 𝗥𝗲𝗮𝗰𝘁 𝗤𝘂𝗲𝗿𝘆: ✔ Automatically caches data ✔ Retries failed requests ✔ Refetches in the background ✔ Keeps server state in sync ✔ Reduces boilerplate code Instead of writing extra logic again and again, you let a library handle server state for you. 🧠 𝗜𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 useEffect is not wrong. But it’s built for side effects — not full server-state management. That’s the difference between: 👉 Making something work 𝘃𝘀 👉 Building something scalable Learning this shifted how I think about frontend development. 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗶𝘀 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝗳𝗲𝘁𝗰𝗵𝗶𝗻𝗴 𝗱𝗮𝘁𝗮. 𝗜𝘁’𝘀 𝗮𝗯𝗼𝘂𝘁 𝗺𝗮𝗻𝗮𝗴𝗶𝗻𝗴 𝘀𝗲𝗿𝘃𝗲𝗿 𝗱𝗮𝘁𝗮 𝘀𝗺𝗮𝗿𝘁𝗹𝘆. Here’s a simple example of fetching Users API. On the left → 𝗠𝗮𝗻𝘂𝗮𝗹 𝘂𝘀𝗲𝗘𝗳𝗳𝗲𝗰𝘁 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵 On the right → 𝗥𝗲𝗮𝗰𝘁 𝗤𝘂𝗲𝗿𝘆 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵 Less boilerplate. Built-in caching. Cleaner logic. Which one would you prefer in a 𝗿𝗲𝗮𝗹 𝗽𝗿𝗼𝗷𝗲𝗰𝘁? 👇 #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #LearningInPublic #ReactQuery

MERN CMS – Part 2: Demo & Workflow in Action Continuing from Part 1, here’s a closer look at my Role-Based Content Management System in action. This video showcases how Admins, Editors, and Authors interact seamlessly through the content lifecycle: 📝 Content Workflow Demonstration Authors create drafts and submit them for review Editors review content, request changes, or approve for publishing Admins oversee users and manage permissions Role-based dashboards ensure every action is secure and intuitive 🎯 Key Features Highlighted Dynamic, role-specific dashboards Draft → Review → Approve → Publish workflow Secure JWT-protected routes Clean UI built with React and modular components 🤖 AI-assisted Development AI tools helped optimize logic, refactor code, and implement best practices faster, making development smoother and more efficient. 💻 Tech Stack Frontend: React, React Router DOM, Axios Backend: Node.js, Express, MongoDB, Mongoose, JWT Authentication 📌 Check out the code on GitHub: https://lnkd.in/duNbJe74 Watch the demo to see how role-based CMS really works in practice! Always open to feedback, ideas, and collaboration 🚀 #MERN #React #NodeJS #MongoDB #CMS #FullStack #JWT #GitHub #AIinDevelopment #LearningByBuilding

🚀 Pro-Tasker | Full-Stack MERN Application Pro-Tasker is a production-style Full-Stack MERN application that I designed, built, documented, and deployed end-to-end following real-world engineering practices. 🧩 What This Project Does 🔐 Secure user registration and login 🪪 JWT-based authentication with bcrypt password hashing 🔑 Ownership-based authorization (users can only access their own projects and tasks) 🛠️ Full CRUD functionality for projects with nested task management 🔒 Protected frontend routes and secure API communication 🏗️ Architecture & Deployment 📦 Frontend and backend maintained as separate codebases ⚛️ Frontend: React (Vite) deployed as a Render Static Site 🚀 Backend: Node.js & Express REST API deployed as a Render Web Service ⚙️ Independent environment configuration for frontend and backend 🧪 Technology Stack React | Vite | Node.js | Express | MongoDB | Mongoose | JWT | Axios | bcrypt 🌐 Live Application 🔗 Frontend: https://lnkd.in/edbWX5N9 🔗 Backend API: https://lnkd.in/eaHaa-9V ⏳ Note on First Load The backend is hosted on a Render free-tier service and may take 30–60 seconds to wake up on the first request. Subsequent requests are fast and responsive. 💻 Source Code 📘 Project Overview Repository: https://lnkd.in/ey4XtGFV ⚛️ Frontend Repository: https://lnkd.in/eaer6ej9 🛠️ Backend Repository: https://lnkd.in/ecnrPKNP 💡 Key Takeaway Authentication is easy. Authorization is where real bugs hide. This project reflects my ability to design, build, secure, document, and deploy a real-world full-stack application using the MERN stack. #FullStackDeveloper #SoftwareEngineering #MERN #BackendDevelopment #ReactJS #NodeJS #FinTech #BankingTechnology #AtlantaTech #CloudDeployment #APIDevelopment #WebDevelopment

Fastify vs Express: Choosing the Right Node.js Framework 🚀 If you’ve worked with Node.js, you’ve probably heard of Express the veteran framework that made building APIs simple and accessible. But in recent years, Fastify has emerged as a high-performance alternative, designed for modern Node.js applications. Here’s a quick breakdown: 1. Express: Simple, Flexible, and Familiar Express is easy to start with a few lines of code and you have a working server. Its huge ecosystem means middleware exists for almost everything: authentication, logging, validation, file uploads, and more. Perfect for learning, prototypes, or projects where flexibility matters more than strict rules. Drawback: it doesn’t natively handle input validation or schema-based responses, and performance can lag for very high-traffic apps. 2. Fastify: Modern, Fast, and Structured Designed for speed and scalability, Fastify handles more requests per second while using less memory. Built-in schema validation and serialization reduces bugs and makes APIs predictable. Plugin-based architecture encourages clean, modular code. Slightly steeper learning curve if you’re used to Express, but great for production-grade APIs and microservices. Which One to Choose? 1. Use Express: if you’re new to backend development, working on small apps, or maintaining legacy projects. 2. Use Fastify: if performance matters, you want cleaner, maintainable code, or you’re building scalable APIs. 💡 My take: Express isn’t outdated it’s reliable and beginner-friendly. Fastify isn’t just “faster Express”; it represents a modern approach to Node.js backend development. Knowing both makes you a more versatile developer. #NodeJS #BackendDevelopment #WebFrameworks #APIDevelopment #Performance #Fastify #ExpressJS #JavaScript #WebDevelopment #TechTips #jobs

𝐓𝐨𝐩 𝟓 𝐕𝐒 𝐂𝐨𝐝𝐞 𝐄𝐱𝐭𝐞𝐧𝐬𝐢𝐨𝐧𝐬 𝐄𝐯𝐞𝐫𝐲 𝐌𝐄𝐑𝐍 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐒𝐡𝐨𝐮𝐥𝐝 𝐔𝐬𝐞 Your code editor can either slow you down… or make you 𝟏𝟎𝐱 𝐦𝐨𝐫𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐯𝐞. These are my 𝐠𝐨-𝐭𝐨 𝐕𝐒 𝐂𝐨𝐝𝐞 𝐞𝐱𝐭𝐞𝐧𝐬𝐢𝐨𝐧𝐬 that every MERN developer should have in their daily workflow 👇 𝐏𝐫𝐞𝐭𝐭𝐢𝐞𝐫 – Clean, consistent code formatting 𝐄𝐒𝐋𝐢𝐧𝐭 – Catch bugs before they reach production 𝐌𝐨𝐧𝐠𝐨𝐃𝐁 𝐟𝐨𝐫 𝐕𝐒 𝐂𝐨𝐝𝐞 – Explore & manage databases directly 𝐄𝐒𝟕+ 𝐑𝐞𝐚𝐜𝐭/𝐑𝐞𝐝𝐮𝐱 𝐒𝐧𝐢𝐩𝐩𝐞𝐭𝐬 – Write React code faster 𝐃𝐨𝐜𝐤𝐞𝐫 – Containerize apps & simplify deployments 💡 Tools don’t replace skills, but 𝐭𝐡𝐞 𝐫𝐢𝐠𝐡𝐭 𝐭𝐨𝐨𝐥𝐬 𝐚𝐦𝐩𝐥𝐢𝐟𝐲 𝐲𝐨𝐮𝐫 𝐬𝐤𝐢𝐥𝐥𝐬. Which VS Code extension can you not work without? Drop it in the comments 👇 Let’s help each other code smarter, not harder 💪 Follow Tapas Sahoo for more 𝐌𝐄𝐑𝐍, 𝐍𝐨𝐝𝐞.𝐣𝐬 & 𝐟𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐢𝐧𝐬𝐢𝐠𝐡𝐭𝐬. #MERNStack #VSCode #WebDevelopment #FullStackDeveloper #JavaScript #ReactJS #NodeJS #MongoDB #DeveloperTools #CodingLife #TechCommunity #SoftwareEngineering #LearnToCode

🚀 Project Update: Server-Side Rendering Application using Node.js & Express.js I developed a server-side rendered web application using Node.js and Express.js, following the MVC (Model–View–Controller) architecture for better structure and scalability. The project manages basic student data such as name, age, roll number, contact details, and address, and exposes a REST API with full CRUD operations (Create, Read, Update, Delete). Server-side rendering improves performance, SEO, and overall user experience. This project strengthened my understanding of backend development, MVC design patterns, RESTful APIs, and real-world deployment challenges. 🛠 Tech Stack: Node.js Express.js REST API MongoDB & Mongoose EJS (Server-Side Rendering) MVC Architecture Git & GitHub 📌 GitHub Repository: https://lnkd.in/gw-Bi-jc 📌Live :- https://lnkd.in/gBYTp6rM Learning by building, debugging, and improving 🚀 Open to feedback and suggestions! #NodeJS #ExpressJS #MVC #BackendDevelopment #RESTAPI #CRUDOperations #ServerSideRendering #MongoDB #StudentManagement #WebDevelopment

React Just Got Way Cleaner If you’ve worked with React for a while, you know how messy data fetching used to feel. useEffect + useState, extra boilerplate, and manual loading/error handling — not fun. This new approach feels refreshingly simple 🔥 React Data Fetching: Then vs Now Before: - useState - useEffect - manual loading & error handling Now: -use(fetchUser()) — that’s it. Example : function User() {  const [user, setUser] = useState(null);  fetchUser().then(setUser);  if (!user) return <p>Loading...</p>;  return <div>{user.name}</div>; } TO function User() {  const user = use(fetchUser());  return <div>{user.name}</div>; } Declarative, readable, and much easier to reason about. React’s evolution is clearly leaning toward better developer experience, and I’m loving it. Cleaner code, fewer bugs, faster development 💯 What do you think — is this the future of data fetching in React? Drop your thoughts below and let’s learn from each other 👇 #ReactJS #JavaScript #Frontend #WebDevelopment #CleanCode #DeveloperExperience #ReactTips

The full-stack landscape is evolving faster than ever. As an engineer with 2+ years of experience across the JavaScript/TypeScript ecosystem—from Next.js and NestJS to Supabase and PostgreSQL—I'm constantly exploring how to build not just functional, but truly scalable and performant applications. One of the biggest shifts I'm seeing is the move towards more structured, decoupled architectures. For instance, implementing Clean Architecture in NestJS by organizing code into feature modules and leveraging its built-in Dependency Injection system dramatically improves maintainability. On the frontend, the Next.js App Router has become my go-to for new projects, enabling server-first rendering and advanced UI patterns like streaming . For data management, the choice between Prisma and TypeORM often comes down to developer experience vs. flexibility. I find Prisma's auto-generated type-safe client a huge win for productivity and preventing runtime errors . Actionable Takeaway: To boost performance, offload long-running tasks like sending emails to a background job queue. Using Bull with Redis or Supabase's Edge Functions with a PostgreSQL queue are both excellent, robust solutions . What's one trend you're most excited about in full-stack development right now? #FullStack #WebDevelopment #JavaScript #TypeScript #NextJS #NestJS #NodeJS #SoftwareArchitecture #PerformanceOptimization