Manifest Infotech Pvt. Ltd™’s Post

Too many API calls can silently kill your app’s performance. Debouncing is the simple trick that fixes it.😎 • Executes only after user stops typing 🛑 • Prevents unnecessary API requests ❌ • Essential for search & input fields 📝 • Improves performance instantly 👌💯 Small optimization → massive impact. #javscript #webdev #frontend #reactjs #interviewprep #coding #performance

Day 13 - Why React Apps Feel Slow? Most developers focus on building features. But very few focus on how those features perform. And that’s where problems start. A slow app is not just a technical issue it directly impacts user experience, engagement, and retention. Common reasons your React app becomes slow: • Too many unnecessary re-renders • Large and deeply nested component trees • Improper state management • Missing memoization • Large bundle size without code splitting Reality check: Your app might be working perfectly… but still delivering a poor experience if it’s not optimized. Key takeaway: Performance is not something you fix later. It’s something you build from the start. In this series, I’ll break down how to fix these issues step by step with practical examples. Next, we’ll start with one of the most important concepts: React.memo and how it prevents unnecessary re-renders #Day13 #ReactJS #Performance #WebDevelopment #Frontend #JavaScript #Developers #Coding #LearningInPublic

Flutter DevTools is one of the most powerful tools — yet most developers use it only when something breaks. In real projects, I treat profiling as part of development, not debugging. My approach: • Use DevTools early during feature development • Track frame rendering (FPS) regularly • Monitor memory usage for leaks • Identify unnecessary widget rebuilds • Fix performance issues before users notice Because performance issues are easier to fix early than after your app scales. Now curious to know: How often do you use Flutter DevTools for performance profiling? Regularly / Only when issues appear / Rarely Drop your answer below 👇 #FlutterDev #AppPerformance #MobileDevelopment #SoftwareEngineering #Developers #PerformanceOptimization

Excited to share my latest project – Real-Time Chat App! Live App: https://lnkd.in/gwszBStF Github Repo: https://lnkd.in/g63dXbez I built a real-time chat application where users can join and communicate instantly. Features: • Real-time messaging • User join notifications • Typing indicator • Group chat system Tech Stack: • Frontend: React.js • Backend: Node.js, Express.js • Real-time: Socket.IO • Deployment: Vercel & Render This project helped me understand real-time communication and WebSockets deeply. I’m still learning and improving, so feedback is welcome 😊 #webdevelopment #reactjs #nodejs #socketio #javascript #projects

Today I learned about WebSocket connections while building a chat app. From what I understood, WebSocket is a protocol that upgrades from the previous HTTP connection and keeps the connection open. Unlike traditional request-response, the connection remains persistent and bidirectional, which means both client and server can send data anytime. It supports full-duplex communication, and it is event-based data is sent only when an event occurs. One important thing I learned is that since the connection stays open, it must be properly closed when no longer needed. Otherwise, it can lead to issues like memory leaks because the server keeps storing active connections. Also features like online/offline status, typing indicators, last seen, etc. are basically just events/messages sent over WebSocket. We define a message format (like JSON) and handle it accordingly. In the video below, I tried implementing this in a simple chat app. The UI is very minimal and not properly styled the focus was only on understanding the working. Am I going in the right direction with this understanding? Would love to hear suggestions or improvements. #WebSockets #JavaScript #WebDevelopment #Realtime #ChatApp 

Next.js is powerful. No doubt. But after building real-world apps, here’s an uncomfortable truth: 👉 Sometimes, it’s overkill. Not every project needs: - Server Components complexity - SSR where CSR works just fine - Built-in routing + API layers + caching… all at once I’ve seen small to mid-sized apps become harder to maintain because: - Simple features required “Next.js-specific” solutions - Debugging got trickier (hydration, caching, server/client boundaries) - Dev speed slowed down instead of improving For many use cases, a simpler stack like React + Vite (or even a clean backend + SPA) can be faster to build and easier to scale. Next.js shines in: ✔️ SEO-heavy apps ✔️ Content-driven platforms ✔️ Large-scale apps needing hybrid rendering But for everything else? It’s worth pausing before reaching for it by default. Right tool > popular tool. #NextJS #WebDevelopment #Frontend #ReactJS #SoftwareEngineering #DevExperience #Programming #Tech

One of the most painful bugs I faced didn’t crash the app. It appeared days after release. Everything looked fine: No errors. No warnings. No crashes. But in production… -Users started getting random logouts -Sessions were resetting unexpectedly -It was hard to reproduce Backend was fine. Tokens were valid. So the issue was inside the app. - Root cause: Async race condition in auth flow On app launch: - Token read - Refresh triggered - Auth state updated All happening at the same time. Sometimes the app checked auth before state was ready. Result: valid users were treated as logged out. Fix: • Centralized auth initialization • Added boot/loading gate • Fixed async order in token flow Result: - Stable sessions - No random logouts - Predictable auth flow The worst bugs are the ones that don’t crash — they silently break behavior over time. Ever faced a production-only bug? 🔥 Hashtags #reactnative #mobiledevelopment #debugging #softwareengineering #javascript #developers

The app didn’t crash. It just got slower… over time. --- While testing a feature, everything looked fine: Initial load was fast API responses were quick UI felt smooth --- But after using the app for a while: It started lagging Interactions became slow Memory usage kept increasing --- No errors. No crashes. Just… gradual slowdown. --- That’s when I realized: 👉 This wasn’t a performance issue. 👉 It was a memory leak. --- The mistake? We were: Not cleaning up event listeners Keeping unused state in memory Letting components hold data longer than needed --- 💡 The fix: Proper cleanup in useEffect Removed unnecessary state Ensured components release memory when unmounted --- Result: Stable performance over time No gradual slowdown Better user experience --- The insight: ❌ “App works fine” ✅ “App works fine over time” --- Most bugs don’t appear instantly. 👉 They show up after continuous usage. --- Now I always ask: What happens after 10 minutes of use? Is anything staying in memory unnecessarily? Are we cleaning up properly? --- Performance is not just about speed. 👉 It’s about consistency over time. --- Have you ever faced an issue that only appeared after using the app for a while? #softwareengineering #debugging #performanceoptimization #reactjs #webdevelopment #fullstackdeveloper #codingtips #devcommunity #programminglife JavaScript Mastery w3schools.com NamasteDev.com Akshay Saini 🚀

🚀 Confused about Context API, Zustand, and Redux? Let’s make it simple. I used to overthink state management a lot. Here’s a clear way to decide 👇 👉 Context API Best for small apps or simple needs. Like sharing theme, logged-in user, or language. No extra setup — just built into React. 👉 Zustand Perfect for medium-sized apps. Very easy to use, less code, and clean logic. Great when your state starts growing but you still want simplicity. 👉 Redux Toolkit Best for large and complex apps. When you have many features, team members, and need proper structure. Helps keep everything organized and predictable. 💡 My rule: Small app → Context Medium app → Zustand Large app → Redux Don’t choose tools for hype. Choose what your project actually needs. --- What do you prefer for your projects? 🤔 #webdevelopment #reactjs #frontend #javascript #programming #developers #softwaredevelopment #coding #reactdeveloper

⚡ React Performance Optimization Tip Unnecessary re-renders can slow down your React app. Use useMemo to optimize expensive calculations. Benefits: • Reduce re-renders • Cache computed values • Improve performance Performance optimization is one of the most important skills for React developers. Are you using useMemo in your projects? #reactjs #performance #frontenddeveloper #mernstack #javascript #reactdeveloper #webdevelopment #optimization #coding #developers