React Query Simplifies Data Fetching in React

Ever wondered how the apps you use every day actually work under the hood? 🚗💨 The MERN Stack is one of the most popular ways to build modern web applications using just ONE language: JavaScript. Here is a quick 5-step breakdown of how a "Login" request travels through the stack: React.js (The Face): The user sees the login page and enters their credentials. The Handshake: React sends that data to the backend API (Express.js). Node + Express (The Brain): The server receives the request and asks the database, "Does this user exist?" MongoDB (The Memory): The database finds the user record and sends a "Success" signal back. Back to React: The UI updates instantly, showing the user their personal dashboard. 👨🏻💻💻🖥🖱⌨️📂💿.. ... #MERNStack #MongoDB #ExpressJS #ReactJS #NodeJS #FullStackDeveloper #JavaScriptDeveloper #WebDevelopment #SoftwareEngineering #WebDev #Programming #CodingLife #FullStackDevelopment #SoftwareDevelopment #WebDesign #TechInnovation #FullStackDeveloper #WebDevelopment #SoftwareEngineering #Programming #Coding #SoftwareDevelopment #TechTrends #FullStack #MERNStack #MongoDB #ExpressJS #ReactJS #NodeJS #JavaScript #MERN #FullStackJS

🚀 React Developer, 𝘁𝗵𝗶𝘀 𝗰𝗵𝗮𝗻𝗴𝗲𝘀 𝗵𝗼𝘄 𝘆𝗼𝘂 𝘁𝗵𝗶𝗻𝗸 𝗮𝗯𝗼𝘂𝘁 𝗱𝗮𝘁𝗮 𝗳𝗲𝘁𝗰𝗵𝗶𝗻𝗴. If you’re building modern apps with Next.js Server Components, you 𝘯𝘦𝘦𝘥 to know about React’s `use()` hook. ✨ 𝗦𝗶𝗺𝗽𝗹𝗲 𝗰𝗼𝗱𝗲. 𝗣𝗼𝘄𝗲𝗿𝗳𝘂𝗹 𝗿𝗲𝘀𝘂𝗹𝘁𝘀. No more `useEffect`, loading flags, or juggling async state just to show data on the screen. ✨ 𝗧𝗵𝗲 𝗻𝗲𝘄 𝘄𝗮𝘆 𝗶𝘀 𝗯𝗲𝗮𝘂𝘁𝗶𝗳𝘂𝗹𝗹𝘆 𝘀𝗶𝗺𝗽𝗹𝗲: ```js const user = use(fetchUser()); ``` ``` // app/page.js (Server Component by default) import { use } from "react"; async function fetchUser() {  const res = await fetch("https://lnkd.in/dkgpikZk");  return res.json(); } export default function Page() {  // React waits for the data before rendering  const user = use(fetchUser());  return (   <div>    <h1>{user.name}</h1>    <p>{user.email}</p>   </div>  ); } ``` That’s it. No orchestration. No noise. ⚡ 𝗪𝗵𝘆 𝘁𝗵𝗶𝘀 𝗳𝗲𝗲𝗹𝘀 𝗹𝗶𝗸𝗲 𝗺𝗮𝗴𝗶𝗰 ✅ Data is already resolved when you use it ✅ Components stay clean and UI-focused ✅ Suspense handles loading states automatically ✅ Faster, smoother rendering with streaming + SSR in Next.js 💡 𝗪𝗵𝘆 𝘁𝗵𝗶𝘀 𝗮𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗺𝗮𝘁𝘁𝗲𝗿𝘀 Great react.js code isn’t about writing 𝘮𝘰𝘳𝘦 logic — it’s about writing 𝘭𝘦𝘴𝘴 of it. `use()` pushes us toward clearer, more scalable components and a dramatically better developer experience. If you care about clean architecture, performance, and future-proof React, this is a pattern worth mastering. #React #Nextjs #WebDevelopment #JavaScript #Frontend #Programming #bhadreshpithwa #webdeveloperguide

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

Ever encountered a memory leak in Node.js that feels like finding a needle in a haystack? Here's one that baffled me recently. Imagine a scenario where your Node.js app keeps hogging more memory over time. Despite your best debugging efforts, you can’t pin down the culprit. One potential sneaky devil? EventEmitter's 'max listeners' in your async workflows. Here's the setup: You've got an event-based system where listeners are dynamically added within async functions. But every time the async block runs, a new listener is added without removing the old ones. Over time, these accumulate silently, causing memory bloat. Here's a minimal example: ```javascript const EventEmitter = require('events'); const emitter = new EventEmitter(); async function fetchData() { emitter.on('data', dataHandler); // Fetch some data... // Don't forget to clean up! emitter.removeListener('data', dataHandler); } function dataHandler(data) { console.log(data); } ``` The oversight? Forgetting to remove listeners. If the `removeListener` isn't there, your listeners will multiply like rabbits. Why's it hard to spot? The leak creeps up slowly and doesn’t trigger immediate alarms. You might only notice when your server starts begging for more memory. How do we avoid this? Always ensure that listeners are deregistered after use, especially in loops or async operations. Alternatively, use `once()` if the listener is intended to run a single time. Memory issues are always a pain, but knowing where to look is half the battle. Have you wrestled with similar memory gremlins? Share your stories or tips below! #JavaScript #NodeJS #MemoryLeak #JavaScript #NodeJS #MemoryLeak

useEffect vs React Query: The Right Way to Handle API Calls in Modern React When beginner React developers start building applications, one question comes up again and again: Should I use useEffect or React Query for API calls? Most of us start with useEffect because it works. But as the application grows, problems start appearing. Why useEffect is not ideal for API calls useEffect is designed for side effects, such as: → Event listeners → DOM interactions → Timers Using it for API data often leads to: → Manual loading & error handling → No caching → Duplicate API calls → Poor scalability 👉 Simply put, useEffect was never designed to manage server data. The modern solution: React Query (TanStack Query) React Query introduces a better approach: Don’t treat server data like local React state. With React Query, you get: → Automatic data fetching → Built-in caching → Loading & error states → Background refetching A simple rule to remember → useEffect → side effects →React Query → server data This small decision makes a big difference in real-world React applications. I’ve explained this in detail with examples in my Medium article. 📖 Link in comments #ReactJS #ReactQuery #JavaScript #FrontendDevelopment #LearningInPublic #WebDevelopment

Full-Stack TODO APP Built a Full-Stack Todo Application — from Auth to Deployment I’ve been working on a production-grade Full-Stack Todo App that goes far beyond a basic CRUD project. This project helped me strengthen my understanding of system design, authentication, API contracts, and real-world frontend–backend integration. 🔑 Key Features ✅ JWT-based Authentication (Register/Login) ✅ Secure password hashing ✅ FastAPI + SQLModel with Neon PostgreSQL ✅ Full CRUD for tasks ✅ Priority levels (Low / Medium / High) ✅ Search & filter functionality ✅ Responsive UI with Next.js + Tailwind ✅ Smooth animations using Framer Motion 🧠 Tech Stack Backend: FastAPI, SQLModel, PostgreSQL (Neon), JWT Frontend: Next.js (App Router), TypeScript, Tailwind CSS Tools: uv, Pytest, REST APIs This project reflects my shift from “just writing code” to building complete, secure, and scalable systems. I’m actively growing toward AI Engineering & Cloud-Native, Spec-Driven Development, and this project is a solid step in that direction. https://lnkd.in/dnWrUuYP thanks to @Ali Aftab Sheikh Hamza Ahmed Sheikh Mubashir Ali Asharib Ali Bilal Fareed #FullStackDevelopment #FastAPI #NextJS #PostgreSQL #WebDevelopment #AIEngineering #LearningInPublic #SpecDrivenDevelopment #AINativeDevelpoment

***Understanding Backend Fundamentals*** Backend development becomes clearer when concepts are applied through small, structured systems. This approach focuses on: 1) REST-style API endpoints 2) JSON-based data exchange 3) Clear separation between frontend and backend logic 4) Server-side validation and state handling A simple dashboard-driven setup helps demonstrate how: 1) User input is sent through HTTP requests 2) Backend logic processes and validates data 3) Structured responses are returned to the frontend 4) Dynamic updates happen without full page reloads Why This Matters These fundamentals form the backbone of modern web applications, making them scalable, predictable, and easier to maintain. Strong backend foundations simplify future work with complex systems, APIs, and data-driven interfaces. #php #shopify #CSS #nodejs #leaning #nextjs #angular #Wordpress #laravel #Python #Flask #BackendDevelopment #APIs #WebDevelopment #ProgrammingBasics

Sometimes, the simplest solution is just good old-fashioned server-side routing. We talk a lot about client-side routing in React/Vue, but handling dynamic routes in the backend with Express.js is arguably the cleanest implementation out there. If you need to build a personalized endpoint—like simulating a login for /dashboard/:username—you don't need complex config files. You just need the colon syntax. Here is the pattern I use for quick dynamic endpoints: 1) The Route Definition Use the colon (:) to tell Express that username is a variable, not a literal string. 2) The Extraction Express automatically maps that segment into the req.params object. No parsing required. JavaScript const express = require('express'); const app = express(); // The dynamic route app.get('/dashboard/:username', (req, res) => { // 1. Capture the parameter const { username } = req.params; // 2. Simulate logic (DB lookup, Auth check, etc.) console.log(`Processing login for: ${username}`); // 3. Return personalized response res.json({ status: 'success', message: `Welcome to your dashboard, ${username}!`, timestamp: new Date() }); }); app.listen(3000, () => console.log('Server ready ')); It’s readable, testable, and reliable. Pro-tip: Don't forget to add a regex validator if you want to restrict what that username can look like (e.g. /dashboard/:username(\\w+)). Backend devs—do you prefer handling this logic at the gateway level or right inside the controller? #expressjs #nodejs #backenddevelopment #api #webdev #javascript