Ditch useEffect for Next.js Server Components

React devs — this is why you’re running out of API limits. Most React beginners make this mistake with useEffect.... And it looks completely harmless. 𝗧𝗵𝗲𝘆 𝘄𝗿𝗶𝘁𝗲 𝘁𝗵𝗶𝘀: useEffect(() => {   fetchData() }) No dependency array. 𝗧𝗵𝗲 𝗽𝗿𝗼𝗯𝗹𝗲𝗺 𝗶𝘀, This runs after EVERY render. Not once. Not on mount. 𝗘𝗩𝗘𝗥𝗬 render. If your effect updates state: it triggers a re-render, which re-runs the effects causing infinite API calls. That's when your app breaks. 𝗧𝗵𝗲 𝗳𝗶𝘅 𝗶𝘀 𝘀𝗶𝗺𝗽𝗹𝗲: useEffect(() => {   fetchData() }, [])  // empty array = runs once on mount 𝗛𝗲𝗿𝗲'𝘀 𝘄𝗵𝗲𝗻 𝗲𝗮𝗰𝗵 𝘃𝗲𝗿𝘀𝗶𝗼𝗻 𝗿𝘂𝗻𝘀: → No array   = runs after every render → Empty array  = runs once on mount → [value]    = runs when value changes Save this — you 𝗪𝗜𝗟𝗟 hit this bug again. Which useEffect mistake have you  made before? Drop it below 👇 Follow for more React tips that save  you hours of debugging. #reactjs #webdevelopment #javascript #MERN

Seven things I check first when someone tells «the React Native app is slow». Just the map of where I usually find the actual problem. Half of the 2022 advice doesn't apply anymore: — React Compiler killed manual memoization — New Architecture removed the JS bridge Here's my mental map for 2026 👇 #ReactNative #MobileDevelopment #Performance #JavaScript #TypeScript #Frontend #MobileApps #ReactCompiler

Every time I start a new React project, I copy the same 5 hooks. Not from a library. From my own collection, battle-tested across 15+ production apps. These aren't clever abstractions. They're boring, reliable utilities that eliminate the same bugs I've fixed dozens of times: 1. useDebounce — stop hammering your API on every keystroke 2. usePrevious — track previous values without infinite re-render loops 3. useLocalStorage — state that survives refresh (SSR-safe, GDPR-aware) 4. useMediaQuery — responsive logic, not just responsive styles 5. useAbortController — cancel requests on unmount, prevent race conditions 5 files. ~150 lines total. Zero dependencies. Senior engineers don't write more code. They carry better defaults. Full TypeScript implementations you can copy today: https://lnkd.in/dguYtize What's the one custom hook you can't live without? #React #TypeScript #CustomHooks #WebDevelopment #JavaScript #DeveloperProductivity #CleanArchitecture #NodeJS

Good list - this is basically the 'React starter pack' ))) I’d add one more that saved me a lot of headaches - useAsync (or useRequest) - wraps loading/error/data + cancellation in one place. Especially useful when combined with AbortController to avoid race conditions and stale state updates.

React developers sometimes face tricky behavior of React. For example: in some specific situations, same-name component-instances re-render each other, instead of doing a fresh independent new mount. This image shows this tricky situation and the solution which is the "key" prop of a component. The different "key" prop forces the component to behave independently even if it has the same name ("Item"). Tags: React, React.js, ReactJS, TypeScript, JavaScript, Zustand, Redux Toolkit, Tailwind, CSS, MUI, MaterialUI, ChakraUI, SVG, Portfolio: https://lnkd.in/dPq6PNuH

NEXT.JS IS GREAT. ...But most projects don’t need it. I keep seeing teams default to Next.js like it’s the only way to build React apps. But in reality, in many cases it just adds complexity: - SSR where it’s not needed - more things to debug (routing, caching, server/client boundaries) - slower onboarding for new devs On one of my recent projects, we had to deal with multiple layers of logic just to understand where the data is fetched and rendered. Could we solve it with plain React + Vite? Probably yes - and much simpler. 😬 Don’t get me wrong - Next.js is powerful 💪: - SEO-heavy apps - large-scale platforms - edge / server logic - moving sensitive business logic and data access to the server layer But using it “by default” is not always a good engineering decision. Sometimes simple is actually better. What do you usually base your choice on when deciding between React and Next.js for a project? Have you ever realized later it wasn’t the right choice? #frontend #reactjs #nextjs #javascript #webdevelopment #softwareengineering #fullstack #nodejs #programming #devlife

#React Compiler is changing how we optimize React apps. For years, we relied on useMemo, useCallback, and React.memo to prevent unnecessary re-renders. Now the React Compiler can automatically memoize many cases at build time. But that doesn’t mean these hooks are dead. You still need them when: • working with useEffect dependencies • integrating with third-party libraries • optimizing expensive computations The new rule in 2026 React development: 1. Write pure components 2. Trust the compiler 3. Optimize only when profiling proves it Slides explaining this 👇 #React #ReactJS #Frontend #WebDevelopment #JavaScript #SoftwareEngineering

Day 14 - React.memo (Stop Unnecessary Re-renders) One of the biggest reasons React apps become slow is something most developers ignore: Unnecessary re-renders. Even when nothing changes, components keep re-rendering and that directly affects performance. That’s where React.memo helps. What React.memo does: • Prevents re-rendering when props don’t change • Improves performance in large applications • Helps optimize expensive components • Works using shallow comparison of props Simple idea: Without React.memo → Component re-renders every time parent renders With React.memo → Component re-renders only when props change When should you use it? • Large components • Lists with many items • Performance-critical UI parts • Components with expensive calculations Important note: Don’t use React.memo everywhere. Unnecessary memoization can actually hurt performance. Key takeaway: Optimization is not about using every tool it’s about using the right tool at the right place. Next, we’ll dive into useMemo and useCallback and how they help in real-world optimization. #Day14 #ReactJS #Performance #WebDevelopment #Frontend #JavaScript #Developers #Coding #LearningInPublic

🚀 React Performance Optimization (TypeScript) Today I worked on enhancing application performance by applying some essential React optimization techniques using TypeScript. 🔍 What I explored & implemented: • Utilized useMemo to cache heavy computations and reduce unnecessary recalculations • Used useCallback to avoid repeated function creation on re-renders • Implemented React.memo to prevent avoidable component updates • Improved overall rendering performance ⚙️ Impact: ✅ Minimized unnecessary re-renders ✅ Boosted component efficiency ✅ Faster and smoother UI interactions ✅ Cleaner, more maintainable codebase 💡 Key Insight: Knowing when to use useMemo, useCallback, and React.memo makes a big difference in building scalable and high-performance React apps. 📈 Still learning and experimenting with real-world performance optimization techniques. #ReactJS #TypeScript #FrontendDevelopment #WebPerformance #JavaScript #ReactOptimization #LearningInPublic #100DaysOfCode

Most beginners think React / Next.js is just about writing code… but the real game starts when you understand components. At this stage (Month 5–6), everything changes. You stop building random pages… and start building reusable systems. A button is no longer just a button. It becomes a component you can use anywhere. A simple UI turns into a structured application powered by props, state, and hooks. This is where you learn: ✔ How to break complex UI into small pieces ✔ How to manage data with state & props ✔ How to build dynamic, fast, and scalable apps ✔ How Next.js takes it further with performance (SSR & CSR) This phase separates beginners from real developers. Because real developers don’t just write code… they build smart, reusable, and scalable architectures. 👉 Master components, and you unlock the real power of frontend development. #ReactJS #NextJS #FrontendDevelopment #WebDevelopment #CodingJourney #JavaScript #LearnToCode #DevelopersLife #UIEngineering #TechSkills