Optimizing React App Performance: Cutting Load Time from 8s to 800ms

React's Context API has a fundamental limitation: scope is binary. You either consume the nearest provider's value, or you wrap everything in a new provider manually. Granular takes a different approach with context(). Every level in the component tree can create a new scope — automatically — without affecting anything above it. Only children see the new value. Parents and siblings remain untouched. How it works: const theme = context("light"); // Root level: theme is "light" for the entire tree. // Inside a dashboard component: theme.provide("dark"); // Now everything inside dashboard and its children sees "dark". // Everything outside dashboard still sees "light". // No new provider wrapper. No boilerplate. One line. Why this matters: In React, if you want a sidebar to have a dark theme while the rest of the app stays light, you wrap the sidebar in a new ThemeProvider. If you want a modal inside that sidebar to go back to light, you wrap again. Every scope change is a new component, a new wrapper, more nesting. In Granular, context scopes chain downward through the hierarchy. Each component can override context for its subtree with a single call. No wrappers, no provider nesting, no re-renders propagating up. Real-world use cases: - Multi-tenant dashboards where each panel has its own config scope - Nested forms where each section overrides validation rules - Theme switching at any depth without provider pyramids - Feature flags scoped to specific UI sections - The scope chain follows the component tree naturally. Override at any level, and children inherit the override. Parents never know it happened. This is what context should feel like: hierarchical, composable, and zero-boilerplate. Granular is open source: https://lnkd.in/dZGxj8Dy npm create @granularjs/app my-app #javascript #frontend #webdev #opensource #reactivity

A post about React after a long time: 🚀 Why useState feels "slow" and Zustand feels like magic ? Ever noticed that when you call setState, your data isn’t actually updated until the next render? If you console.log it immediately after, you’re looking at the previous data. On the other hand, If you’ve used Zustand, you’ve probably noticed something different: it feels immediate. This happens because the execution model is fundamentally different. ⏱️ The useState :- React handles state updates asynchronously (Not actually async but it schedules update so it feels like async). When you update state, you aren't changing a variable; you are scheduling a re-render. You are trapped in a "closure" of the current render until the whole component cycles again. It is something like this: "I’ve noted your request. I'll show you the new value in a moment." ⚡ The Zustand :- Zustand lives outside the React render cycle. When you trigger an action, the store updates synchronously. The data changes now, and React is notified to catch up afterward. it is something like this: "Consider it done. I'll let the UI know we've already moved on." #ReactJS #Zustand #WebDevelopment #Frontend #JavaScript #CodingTips #Typescript

Day 8 of my Next.js journey 🚀 Today was all about turning backend logic into real, user-facing features. Here’s what I worked on 👇 ✅ Built Create Question server action ✅ Created and tested question submission flow ✅ Implemented Edit Question functionality ✅ Tested update logic properly Then focused on the Home Page 👇 ✅ Fetched questions from the database ✅ Displayed them dynamically ✅ Implemented proper UI states     • Loading     • Empty state     • Data rendered state Big takeaway 💡 Building features isn’t just about writing logic — it’s about connecting database → server action → UI → user experience smoothly. Seeing questions flow from submission to homepage made the app feel real. Huge shoutout to JavaScript Mastery 🙌 Momentum continues 🔥 What do you think is more challenging — backend logic or handling clean UI states? #NextJS #FullStackDevelopment #ServerActions #WebDevelopment #LearningInPublic #JavaScript #JSMastery

🛑 Stop Re-rendering! Mastering React Performance Optimization ⚡⚛️ One of the most common performance killers in React apps is 𝐮𝐧𝐧𝐞𝐜𝐞𝐬𝐬𝐚𝐫𝐲 𝐫𝐞-𝐫𝐞𝐧𝐝𝐞𝐫𝐬. If a parent component updates, its children usually re-render too—even if their data hasn't changed at all. This is where 𝐏𝐮𝐫𝐞 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬 come in. 1️⃣𝐓𝐡𝐞 𝐂𝐨𝐧𝐜𝐞𝐩𝐭 (𝐂𝐥𝐚𝐬𝐬 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬) 🏛️ • In the old days, we extended `React.PureComponent` instead of `React.Component`. • It automatically implemented `shouldComponentUpdate` with a 𝐬𝐡𝐚𝐥𝐥𝐨𝐰 𝐜𝐨𝐦𝐩𝐚𝐫𝐢𝐬𝐨𝐧 of props and state. • 𝑅𝑒𝑠𝑢𝑙𝑡: If data looks the same, the render is skipped. 2️⃣𝐓𝐡𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧 (𝐅𝐮𝐧𝐜𝐭𝐢𝐨𝐧𝐚𝐥 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬) 🚀 • Since we mostly use functions now, we have `React.memo`. • It is a Higher-Order Component (HOC) that wraps your function. • `const OptimizedComponent = React.memo(MyComponent);` • 𝑅𝑒𝑠𝑢𝑙𝑡: Same behavior! It memoizes the result and only re-renders if props change. ⚠️ 𝐓𝐡𝐞 "𝐒𝐡𝐚𝐥𝐥𝐨𝐰" 𝐓𝐫𝐚𝐩: Remember, both methods use 𝐬𝐡𝐚𝐥𝐥𝐨𝐰 𝐜𝐨𝐦𝐩𝐚𝐫𝐢𝐬𝐨𝐧. If you pass a 𝑛𝑒𝑤 object or function reference (like an inline arrow function `onClick={() => {}}`) from the parent, React will think the props changed every time, breaking your optimization. 𝐏𝐫𝐨 𝐓𝐢𝐩: Always pair `React.memo` with `useCallback` for functions to make it actually work! Check out the visual comparison below! 👇 Do you wrap everything in `React.memo` by default, or only when you see performance issues? #ReactJS #WebPerformance #FrontendDevelopment #JavaScript #CodingTips #SoftwareEngineering

🚀 Just Launched: My CRUD App Built with React & Vite! 🚀 Live Demo: https://lnkd.in/gE7-mPht Source Code: https://lnkd.in/g6gzXc74 I’m excited to share a live project I’ve been working on — a fully functional CRUD application built using modern web development tools and best practices. 🔧 Tech Stack Used ✨ React + Vite for a fast, optimized frontend 🎨 Tailwind CSS for responsive and clean UI design ⚙️ Redux Toolkit + useReducer for robust state management 📦 MockAPI to simulate backend data and endpoints 📌 Project Highlights 🔹 Create, Read, Update, and Delete data seamlessly 🔹 Structured and scalable state logic 🔹 Lightweight, high‑performance setup with Vite 🔹 Clean UI using utility‑first CSS (Tailwind) 🔹 Practical use of Redux Toolkit patterns This project helped me deepen my understanding of: ✅ React component architecture ✅ Advanced state management ✅ Working with RESTful APIs ✅ UI design principles I’d love to hear your thoughts or suggestions! 💬 #reactjs #vite #tailwindcss #redux #redux-toolkit #webdevelopment #frontend #javascript #portfolio #github

One of the most common confusions for beginners is understanding the difference between a library and a framework. React is a library. It focuses mainly on building user interfaces. You choose how to handle routing, data fetching, folder structure, and other tools. Next.js is a framework built on top of React. It gives you a complete structure out of the box: routing, server-side rendering, API routes, performance optimizations, and SEO support. In simple terms: • A library gives you tools to use. • A framework gives you a system to follow. With React, you control the architecture. With Next.js, the framework guides the architecture. Both are powerful — the choice depends on how much structure and scalability your project needs. As someone learning both, I now see why many production apps move from React to Next.js for real-world use cases. #React #Nextjs #WebDevelopment #Frontend #JavaScript #LearningInPublic #DeveloperJourney #SoftwareEngineering

React Error Handling, Error Boundary & Lazy Loading Explained 🚀 While building scalable React applications, I focused on improving stability and performance using some essential concepts: 🔹 Error Handling in React Implemented proper error handling using try-catch for API calls, optional chaining (?.) to prevent undefined errors, and conditional rendering with if-else to ensure smoother user experience. 🔹 Error Boundaries Used Error Boundaries to catch unexpected UI errors and prevent the entire application from crashing — making the app more production-ready. 🔹 Lazy Loading & Code Splitting Optimized performance using React.lazy and Suspense to reduce bundle size and load components only when needed. These techniques significantly improve application reliability, maintainability, and performance — especially in real-world production projects. 🎥 I’ve explained these concepts step-by-step in my latest YouTube videos: 👉Error Handling: [https://lnkd.in/dX3DgaSh] 👉Error Boundary: [https://lnkd.in/dajUSmXS] 👉Lazy Loading: [https://lnkd.in/dvkHSH4N] Let’s connect and grow together: 🔗 LinkedIn: [ https://lnkd.in/d4VFcWrR] 💻 GitHub: [https://lnkd.in/dcgMPcBJ] #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #PerformanceOptimization #ErrorHandling #CodeSplitting #SoftwareDevelopment #LearningInPublic

React re-renders are not the enemy; incorrect state placement is. A common misconception is that “too many re-renders = bad performance.” Here’s a classic mistake: ❌ Lifting state too high ```javascript function App() {   const [isOpen, setIsOpen] = useState(false);   return (   <>    <Header />    <Sidebar isOpen={isOpen} />    <Content onOpen={() => setIsOpen(true)} />   </>  ); } ``` In this example, every time `isOpen` changes, the Header, Sidebar, and Content components re-render, even if only Content cares about the state. The issue isn't with re-renders; it's about where the state lives. ✅ Better state placement ```javascript function Content() {   const [isOpen, setIsOpen] = useState(false);   return (   <>    <Button onClick={() => setIsOpen(true)} />    <Modal open={isOpen} />   </>  ); } ``` Why this works: • Re-renders are cheap. A render does not equal a DOM update. React efficiently compares trees and can bail out early. • Lifting state too high can lead to unnecessary re-renders, tighter coupling, and harder-to-reason components. The mental model I follow is to keep state as close as possible to where it’s used. Lift it only when sharing is unavoidable. Optimize after measuring, not before. Most React performance issues are architectural, not problems with React itself. #React #ReactJS #FrontendDevelopment #FrontendEngineering #JavaScript #WebDevelopment #SoftwareEngineering #PerformanceOptimization #EngineeringMindset

Why is it so hard for a web app to remember where it just was? 🧠🔙 Most JavaScript routers are great at telling you where you are, but they have "amnesia" when it comes to where you were. When building RoutaJS, I wanted to solve a specific pain point: Accessing previous navigation data without the boilerplate. In standard SPAs, if you want to know the "previous route," you usually have to: 1. Manually track state in a global store. 2. Listen to every route change and cache the previous URL. 3. Deal with null values on initial loads. RoutaJS does the heavy lifting for you. It keeps track of the navigation lifecycle, giving you instant access to the previous route's data. This makes building breadcrumbs, "Go Back" logic, and analytics-tracking effortless. I built this to be: ✅ Lightweight: No bulk, just the features you need. ✅ Context-aware: It knows your app's history so you don't have to. ✅ Developer-first: Designed for simplicity and speed. I'm really proud of how this simplifies the logic for complex navigation flows. Check out the repo, star it if you like it, and let me know what features I should add next. https://lnkd.in/dfFnKfkT #Javascript #WebDev #RoutaJS #FrontendEngineering #OpenSource #SoftwareArchitecture

🥳 Excited to share my latest open-source project : redux-auto-slice 🚀 🥵Tired of writing the same repetitive Redux Toolkit slices over and over again? Things like add/remove/update/clear for carts, todos, users, products... it adds up fast in medium-to-large apps. So I built redux-auto-slice a tiny utility that lets you generate full RTK slices (reducer + actions + selectors) in just 1–4 lines instead of 20–50.😍 Quick example : Shopping Cart in seconds: import { createAutoSlice } from 'redux-auto-slice'; export const cart = createAutoSlice({ name: 'cart', initialState: [] as { id: string; name: string; qty: number }[], reducers: ['add', 'remove', 'clear', 'updateQuantity'], }); 💥Boom you get : cart.reducer ready for your store Actions: cart.actions.add(item), cart.actions.remove(id), etc.🥰 Selectors: selectAll, selectById, selectTotal... Supports array lists, normalized entity state (like createEntityAdapter but simpler), and even basic async thunks with loading/error handling.🤩 Published on npm: 👉 npm install redux-auto-slice Would love your feedback ✍🏻, stars 🌟, or contributions 🌍! Have you ever felt Redux boilerplate fatigue? How do you usually handle it? #React #Redux #ReduxToolkit #TypeScript #OpenSource #JavaScript #Frontend #WebDevelopment #npm #alfayad #fayadtech #freelanceturbo