3 Dead API Routes in Next.js Apps

⚛️ React Insight: Small things matter more than big fixes In React / Next.js apps, performance issues usually come from simple things: 🔁 Unnecessary re-renders 📦 Heavy or unoptimized props 🧠 Too much state in one place 🏗️ Poor component structure Most of the time, I don’t “optimize” first — I simplify first. Clean components + better structure solve most performance problems naturally. Less complexity = better performance 🚀 #ReactJS #NextJS #FrontendDevelopment #WebDev #JavaScript

Recently worked on optimizing a React app and improved Core Web Vitals by ~35%. Key learnings: • Code splitting makes a huge difference • Avoid unnecessary re-renders • Always measure before optimizing Curious — what’s your go-to performance trick? #frontend #reactjs #nextjs #webperformance #corewebvitals #javascript #typescript #softwareengineering #performanceoptimization

Want to build scalable and high-performance apps with React Redux? Dive into our complete beginner-friendly guide and simplify your state management like a pro! 👉 Read now:  https://lnkd.in/gW7fPkjR #ReactRedux #ReactJS #WebDevelopment #FrontendDevelopment #JavaScript #AppDevelopment #TechGuide #Developers #CodingLife #LatitudeTechnolabs

In React, you can show or hide components based on conditions 3 ways to do it....  1. 𝗶𝗳/𝗲𝗹𝘀𝗲 if (isLoggedIn) return <Dashboard /> else return <Login /> 2. 𝗧𝗲𝗿𝗻𝗮𝗿𝘆 𝗼𝗽𝗲𝗿𝗮𝘁𝗼𝗿 {isLoggedIn ? <Dashboard /> : <Login />} 3. && 𝗼𝗽𝗲𝗿𝗮𝘁𝗼𝗿 {isLoggedIn && <Dashboard />} Use && when you only want to show something and have nothing to show otherwise. Use ternary operator when you have two options. This is how every login/logout, loading spinner, and error message works in a React app #reactjs #webdevelopment #javascript #MERN

React Server Components are changing how we build web apps. - They run on the server, so less JavaScript is sent to the browser. This makes apps faster and lighter. - They are now the default in Next.js. - But you need to understand server and client boundaries, and there are some limitations. - Still, it’s a big step towards better performance. What do you think about it? #React #NextJS #WebDevelopment #JavaScript

This small React mistake can break your entire app 👇 Many developers write code like this: if (condition) return null; useEffect(() => { // logic }, []); Looks fine, right? ❌ But it can cause a serious error. 💥 Error: "Rendered fewer hooks than expected" 🔍 Why this happens React has a strict rule: 👉 Hooks must be called in the same order on every render 📌 What actually happens: • 1st render → early return → useEffect NOT called • 2nd render → useEffect called 👉 Hook order mismatch = 💣 error ✅ Fix Always call hooks first, then apply conditions: useEffect(() => { // logic }, []); if (condition) return null; 💡 Rule to remember: Never call hooks conditionally. Keep them at the top level. Have you ever faced this error before? 👇 #react #nextjs #javascript #webdevelopment #frontend

I think this is a common mistake among beginners. If you're a beginner and want to avoid this, it's better to use ESLint or Biome. I recommend using Biome it's faster, and the default settings are actually pretty good 🤩

🚀 I improved my Next.js app performance without adding any new library… Most developers think performance = install more packages. I used to think the same. But recently, while working on a production project, I focused on fixing fundamentals instead of adding complexity 👇 ✅ Reduced unnecessary re-renders ✅ Optimized API calls (no duplicate fetching) ✅ Used proper dynamic imports in Next.js ✅ Cleaned up unused components & heavy logic 📉 Result? - Faster page load - Better Lighthouse score - Smoother user experience 💡 Biggest lesson: Performance is not about tools — it's about understanding your code deeply. Sometimes, the best optimization is removing things, not adding. Curious — what’s one performance mistake you’ve seen developers make often? #reactjs #nextjs #webdevelopment #frontend #performance #javascript

your useEffect runs once. then twice. then forever. the browser fan spins. console logs spam. the app freezes. you panic. why it happens: useEffect with missing or wrong dependencies re-runs every render. if your effect causes a state update, that triggers a re-render, which runs the effect again, which updates state again. infinite loop. always add dependency array. always. #reactjs #javascript #webdevelopment #buildinpublic #typescript

Stop overcomplicating WebAssembly for compute-heavy web apps — real-world use cases. I've reviewed hundreds of implementations. The best ones? Dead simple. The pattern: - Start with the boring solution - Measure actual bottlenecks - Only then add complexity Premature optimization is real, and it kills projects. What's the simplest solution you've shipped that just worked? #WebDevelopment #TypeScript #Frontend #JavaScript