React Native SOLID Principles for Scalable Code

𝐀𝐈 isn’t changing engineering because 𝐢𝐭 𝐜𝐚𝐧 𝐰𝐫𝐢𝐭𝐞 𝐜𝐨𝐝𝐞. It’s changing engineering because it 𝐜𝐡𝐚𝐧𝐠𝐞𝐬 𝐡𝐨𝐰 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐬 𝐭𝐡𝐢𝐧𝐤. After a decade building frontend and mobile systems deep in React and React Native. I’ve seen frameworks come and go. The biggest productivity shift I’ve experienced didn’t come from another framework. It came from learning how to use 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞 𝐚𝐬 𝐚 𝐬𝐲𝐬𝐭𝐞𝐦, 𝐧𝐨𝐭 𝐚 𝐟𝐞𝐚𝐭𝐮𝐫𝐞 𝐥𝐢𝐬𝐭. Most content treats AI tools like man pages. Real impact comes from composing them into workflows where the whole is greater than the sum of its parts. I wrote a short, opinionated piece on how Claude Code actually moves the needle in real-world React and React Native codebases. 👉 https://lnkd.in/gXv_euPE #ClaudeAI #AITransformation #SoftwareEngineering #ReactNative #SystemsThinking #DeveloperProductivity

Common Frontend Performance Mistakes (and How I Learned Them the Hard Way) Last year, I shipped a React project that looked great… but every time it loaded, it lagged. Badly. Users noticed. Complaints came in. And yeah, that one hurt That experience taught me something important, good UI means nothing if the app feels slow. Since then, I’ve been intentional about avoiding performance traps I didn’t even know I was falling into before. I learned to stop unnecessary re-renders by being smarter with state and using tools like React.memo. In that same dashboard, simply isolating heavy components made the app feel instantly smoother. I also stopped shipping massive images. Now I compress everything and lazy-load media by default. Small change, big impact. Then there’s bundle size, because no user wants to download your entire app just to view one page. Code splitting with Vite/Webpack and keeping CSS lean (Tailwind JIT is a lifesaver) has become part of my workflow. And finally, APIs. Fetching everything at once used to feel convenient… until it froze the UI. These days, I paginate data, cache responses, and use tools like Firebase and React Query to keep things fast and responsive. The biggest lesson? Performance isn’t something you fix later. It’s part of good frontend development, just like clean UI and accessibility. Now, every project I work on starts with this mindset: think about the user, optimize early, and write code that scales, not just code that works. If you’re building a team that values frontend developers who care about both experience and performance, I’d genuinely love to connect 🤝 #FrontendDevelopment #ReactJS #WebPerformance #FrontendEngineer #JavaScript #WebDev

🚀Common React Native Issue: Unnecessary Re-renders 📱 React Native developers often hit a wall when components re-render too many times. This can make a smooth app feel sluggish and unresponsive. 🐌 🛑 The Problem Laggy UI: The interface feels "heavy" or stuttery. 🧊 Overactive Renders: Screens refresh even when nothing visible has changed. 🔄 Scaling Issues: Performance dips as your codebase expands. 📈 🛠️ The Solution useCallback: Memoize functions so they aren't recreated on every render. 🧠 useMemo: Cache those heavy, expensive calculations. 💾 Component Splitting: Break giant components into small, focused pieces. 🧩 State Management: Keep your state lean and scoped only where it’s needed. 🎯 💡 Key Takeaway Clean Code = Fast Apps. ⚡ Optimized logic ensures a buttery-smooth experience for your users! 🌟

React Native didn’t have a speed limit. It had a "Bridge" tax. 💸 For years, the "Native vs. Hybrid" debate centered on one bottleneck: The Bridge. Every touch event, every scroll, every piece of data had to be serialized into JSON, sent across the chasm, and decoded. The New Architecture hasn't just improved the bridge; it demolished it. If you are running React Native 0.76+ (and it's 2026, so you should be), your performance reality has shifted: 1. JSI (JavaScript Interface) ⚡ We’ve moved from "sending messages" to "sharing memory." JS now holds a reference to C++ host objects. Direct. Synchronous. Instant. 2. The Fabric Renderer 🎨 UI is no longer a downstream consequence. Fabric allows for Concurrent Rendering, meaning your app can prioritize a user's gesture over a heavy background data fetch. No more "stutter" when the list gets long. 3. TurboModules 🚀 Why load the Bluetooth, Camera, and GPS modules if the user is only on the Login screen? TurboModules are lazy-loaded by default, slashing your TTI (Time to Interactive). The framework is no longer the excuse. With the New Architecture, the performance delta is effectively zero. It's time to stop coding around limitations and start building for the future. Are you still shipping legacy bridges, or have you migrated to the New Architecture? #ReactNative #MobileArchitecture #JavascriptInterface #AppPerformance #SoftwareEngineering

React devs — this is a BIG one. Vercel just released React Best Practices, a practical, production-focused guide built from 10+ years of running React & Next.js apps at scale. This isn’t theory — it’s the stuff that actually moves performance in real apps. A few dev-level takeaways I really liked: Fix the big stuff before micro-optimizing The guide strongly discourages premature useMemo / useCallback everywhere. Instead, it pushes devs to start higher in the stack — async waterfalls, data fetching patterns, and bundle size — where you’ll see real wins. 🚿 Async waterfalls = hidden latency Sequential await calls that don’t depend on each other slow everything down. Parallelizing async work and deferring non-critical data can drastically improve TTFB and overall responsiveness. 📦 Bundle size still matters (a lot) Shipping less JavaScript is one of the highest-impact optimizations: aggressive code-splitting removing unused dependencies avoiding heavy client-only libraries Less JS → faster parse → faster interaction. Opinionated rules > random tips What makes this stand out is the structure: 40+ best-practice rules, categorized (server, client, rendering, JS perf) and ranked by impact. It’s basically a performance playbook for React teams. 🤖 Built for AI-assisted dev workflows These rules are structured so AI tools (Cursor, Copilot, Claude, etc.) can automatically flag issues and suggest improvements — making performance part of the dev loop, not a last-minute audit. I am sure you would want to go deeper into this so the link is in the first comment. #react #nextjs #Frontend #WebPerformance #JavaScript #DeveloperExperience

🚀 𝗥𝗲𝗮𝗰𝘁 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗶𝘀𝗻’𝘁 𝗮𝗯𝗼𝘂𝘁 𝗰𝗹𝗲𝘃𝗲𝗿 𝘂𝘀𝗲𝗠𝗲𝗺𝗼𝘀. 𝗜𝘁’𝘀 𝗮𝗯𝗼𝘂𝘁 𝗼𝗿𝗱𝗲𝗿𝗶𝗻𝗴. After years of shipping large ReactJS & NextJs apps, one pattern keeps showing up: 👉 Teams optimize too low in the stack. If your app:  • Has async waterfalls adding 500–600ms 🐢  • Ships hundreds of KBs of unused JS 📦  • Re-renders components unnecessarily 🔁 …then micro-optimizations won’t save you. That’s why I really like what Vercel just published with 𝗿𝗲𝗮𝗰𝘁-𝗯𝗲𝘀𝘁-𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀. Instead of random tips, it’s a 𝗽𝗿𝗶𝗼𝗿𝗶𝘁𝗶𝘇𝗲𝗱 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸 built from 𝟭𝟬+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗿𝗲𝗮𝗹 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗽𝗮𝗶𝗻, ordered by actual impact: 🔴 𝗖𝗥𝗜𝗧𝗜𝗖𝗔𝗟  • Eliminate async waterfalls  • Reduce bundle size 🟠 𝗛𝗜𝗚𝗛 → 𝗠𝗘𝗗𝗜𝗨𝗠  • Server-side performance  • Client-side data fetching  • Re-render optimization 🟢 𝗜𝗡𝗖𝗥𝗘𝗠𝗘𝗡𝗧𝗔𝗟  • Rendering & JS performance  • Advanced patterns Each rule explains:  • Why it matters  • What breaks performance  • How to fix it (with real code examples) What really stands out 👇 The rules compile into a single 𝗔𝗚𝗘𝗡𝗧𝗦.𝗺𝗱, so 𝗔𝗜 𝗰𝗼𝗱𝗶𝗻𝗴 𝗮𝗴𝗲𝗻𝘁𝘀 ( Cursor, Codex, Claude Code, Opencode etc.) can apply the same performance decisions consistently across a codebase. This is how performance work should be done: ✅ Prevent regressions ✅ Fix root causes ✅ Scale knowledge across humans and agents If you build React / Next.js apps at scale, this is worth bookmarking.. 🔗 Check out react-best-practices from Vercel 💬 Curious: what’s the biggest performance issue you keep seeing in React apps today? #react #nextjs #vercel #frontend #bhadreshpithwa #webdeveloperguide #webperformance #frontendengineering #javascript #softwareengineering #typescript #aifordeveloper #webdevelopment

React Native just got faster, here’s why. For a long time, React Native performance issues were less about JavaScript and more about how the system bridged JS and native code. The new architecture fixes that at the foundation. Fabric is the new rendering system. It gives React Native a more predictable and synchronous way to update the UI. Layout and rendering are better coordinated, which reduces dropped frames and makes animations feel more responsive, especially in complex screens. TurboModules replace the old native module system. Instead of loading everything at startup, native modules are initialized only when they are actually needed. This cuts startup time and reduces memory overhead, which is noticeable in real production apps, not just demos. The biggest gain is consistency. The new architecture aligns React Native more closely with how React itself works. State updates propagate more cleanly, UI and logic stay in sync, and performance becomes easier to reason about instead of something you tune endlessly. The result is not just speed. It is stability. Apps feel smoother under load, scale better as features grow, and behave more predictably across devices. React Native did not get faster because of a single optimization. It got faster because the foundation was rebuilt. #ReactNative #MobileDev #ReactNativeArchitecture #Fabric #TurboModules #AppPerformance #MobileEngineering #CrossPlatform #SoftwareEngineering #ProductEngineering

🔥 Custom Hooks in React: "With great power comes great responsibility"! Custom hooks are one of React’s most powerful abstractions. They let us reuse logic, simplify components, and write more declarative code. But with great power comes… complexity traps if we’re not careful. Here’s how I approach custom hooks in real-world, scalable React apps 👇 🔹 Keep Hooks Single-Purpose A hook should do one thing well. If it handles fetching, caching, retries, and UI state — it’s probably time to split it. 🔹 Abstract Only When It Pays Off Not every useEffect deserves a custom hook. Extract logic when it improves readability or reuse — not just to “look clean”. 🔹 Design a Clear API Treat hooks like public APIs: A predictable return shape makes hooks easier to adopt and maintain. 🔹 Avoid Hidden Coupling Hooks that silently depend on global context, environment variables, or side effects are hard to reason about. Explicit inputs > implicit dependencies. 🔹 Watch Performance Carefully Unmemoized callbacks or derived values inside hooks can trigger unnecessary re-renders. "useCallback" and "useMemo" still matter inside hooks. 🔹 Document the Contract A custom hook is a mini-library. A short comment or usage example can save hours for the next developer (including future you). 🚫 Common Pitfalls I See 👉 “God hooks” that do everything 👉 Hooks created too early 👉 Business logic buried so deep it’s hard to debug 👉 Reusability at the cost of clarity 👉 My rule of thumb: If a custom hook doesn’t make the consuming component simpler and more readable, it’s not doing its job. Curious to hear from fellow React devs 👇 What’s the most complex custom hook you’ve had to refactor? #ReactJS #CustomHooks #FrontendArchitecture #CleanCode #WebDevelopment #development #bestpractices

React Architecture Explained Simply 🚀 React makes building apps easy with its smart component-based setup. It focuses on speed, growth, and clean designs. User Interface: UI comes from reusable React Components in JSX. Each one handles its own look and actions. React Core: Controls rendering, props, state, and hooks. It smartly decides what to update and when. Virtual DOM: A fast copy of the real DOM. React spots changes (diffing & reconciliation) and updates only what's needed—keeping apps super quick! State Management: Manages your app's data. • Local: useState or useReducer • Global: Context API or Redux Routing: React Router lets you switch pages without reloads—perfect for smooth SPAs. Data Fetching & Side Effects: Grab data from APIs (REST/GraphQL) with useEffect. Links your app to the backend easily. Build & Tooling: Vite, Webpack, Babel, and TypeScript bundle and optimize for production. Testing: Use Jest, React Testing Library, or Cypress to catch bugs early. Why React Rocks • Reusable components • Blazing performance • Scales effortlessly • Huge ecosystem Master this architecture, and you're set for any frontend project! What's your favorite part? 👇 #ReactJS #FrontendDevelopment #WebDev #JavaScript #ReactArchitecture #Coding #SoftwareEngineering #LearnReact

🚀 Day 72 Optimizing Performance in React with useMemo Today’s lesson was about memoization in React and how the useMemo hook helps optimize performance by avoiding unnecessary expensive calculations. 🔹 React Hooks Naming Convention All React hooks start with use (like useState, useEffect, useMemo) to clearly indicate they follow React’s hook rules and lifecycle. 🔹 What is Memoization? Memoization is a technique where we store the result of an expensive function and reuse it when the same input occurs again—rather than recalculating every time. 💡 Think of it like memorizing math answers instead of solving the same problem repeatedly. 🔹 The Problem: Expensive Operations Some functions are costly and slow: • Heavy calculations • Large loops • Repeated logic on every re-render • In a counter app, every button click causes a re-render—and without • • optimization, the expensive function runs again, slowing the UI ❌ 🔹 The Solution: useMemo useMemo: • Caches the result of a calculation • Recalculates only when dependencies change • Skips unnecessary re-execution on re-render const result = useMemo(() => expensiveFunction(value), [value]); 🔹 How useMemo Works • First value → function runs & result is stored • Same value → cached result returned instantly • New value → function runs again & updates cache 🔹 Important Notes • useMemo caches only the last value • Don’t overuse it—apply only for expensive logic • Best when inputs change less frequently than renders 📌 Key Takeaways • useMemo improves performance by memoizing heavy calculations • Prevents UI lag caused by unnecessary re-computation • Dependency array controls when recalculation happens • Essential optimization tool for React developers • Smart optimization leads to smoother and faster React apps 🚀 #ReactJS #useMemo #JavaScript #FrontendDevelopment #PerformanceOptimization #LearningInPublic #WebDev #Day69