Node.js: Avoid Freezing with setImmediate

Most React developers learn hooks. Very few understand why they work. Here's what nobody told you when you started useState with a function? That's lazy init, your app just got faster. useCallback? Your functions were silently breaking your child components. Custom hooks? That's the difference between a junior and a mid-level dev. These aren't advanced concepts. They're the basics, done right. Save this. You'll need it at 2AM when something breaks. 🔖 #ReactJS #React #JavaScript #WebDevelopment #hasabtech

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

Node.js vs NestJS - which is better? 🔹Node.js is a runtime that gives you full freedom to build backend apps from scratch. 🔹NestJS is a framework built on Node.js that adds structure and scalability. 👉 Node.js = flexibility 👉 NestJS = structure There is no “perfect” one, it depends on your project: Small apps → Node.js Large scalable apps → NestJS #nodejs #nestjs #backenddevelopment #javascript #programming

React taught me something no tutorial ever will… Users don’t care how complex your app is. They only care if it works smoothly. They won’t see: the state you managed across 5 components the Redux logic keeping everything in sync the hours spent fixing one tiny bug the edge cases you handled silently If everything works perfectly… 👉 they notice nothing. And that’s the goal. Because in frontend, a seamless UI is just hundreds of invisible problems solved. Not gonna lie — it can feel underrated sometimes. But there’s a different kind of satisfaction in knowing: You turned messy logic into something simple for the user. That’s real development. Frontend devs — what’s something you’ve fixed that no one will ever notice? 👇 #ReactJS #Redux #FrontendDeveloper #DeveloperLife #BuildInPublic #CodingJourney #ReactJS #Redux #FrontendDevelopment #DeveloperLife #BuildInPublic #TechCareers #SoftwareDeveloper

Most React devs bring their SPA habits into Next.js — and their users pay the price. 👇 You've written it a hundred times: useState for data, useEffect to fetch it, a spinner while they wait. It works in React. In Next.js App Router, it's the wrong pattern entirely. Server Components let you fetch data inside the component — on the server, before the page hits the browser. No loading state. No extra JS bundle. No hydration issues. HTML that arrives ready. I've swapped dozens of useEffect fetch patterns for async Server Components and the Lighthouse scores jump immediately. Use the server for reads. Use useEffect for things only the browser can do. #NextJS #ReactJS #WebDevelopment #JavaScript #TypeScript #AppRouter #ServerComponents #ReactHooks #FrontendDeveloper #SoftwareEngineer #CleanCode #100DaysOfCode #WebPerformance #Programming #WebDev #NextJS14 #FullStackDeveloper #CodeQuality

🚀 Quick question for backend devs… Has your Node.js app ever worked perfectly… and then suddenly slowed down under real traffic? Yeah, same here. Let me share something that took me time to truly understand 👇 👉 Node.js is NOT magically parallel. Even if you're using async/await… your CPU-heavy code can still block everything. 💥 Example: A heavy loop or data processing task → blocks the event loop → all requests get delayed 💡 What I do now: ✔ Move heavy tasks to worker threads ✔ Use queues for background jobs ✔ Keep request handlers lightweight ⚡ Lesson learned: “Async doesn’t mean scalable.” If your app slows down under load, don’t just check your APIs… check your CPU usage. Have you ever faced this in production? #nodejs #backend #performance #scalability #javascript #webdevelopment #softwareengineering

I've learned something every React dev should know. 🧹 It's called lifting state up — and it's not just a best practice. It's what separates scalable React apps from messy ones. Swipe through to see: → Why duplicated state breaks your app → The fix (with real code) → Exactly when to apply it The concept is simple. The impact is massive. ♻️ Repost if this helped someone on your team. 💬 Drop a comment — how has lifting state changed your codebase? #React #JavaScript #Frontend #WebDev #ReactJS #Programming #SoftwareEngineering

🚀 Frontend ↔ Backend Connection Explained! I recently created a visual guide to help understand how a modern web application works behind the scenes — especially for beginners and fellow developers. Here’s what I covered: 🔹 Axios – Used to send HTTP requests from the frontend to the backend 🔹 CORS – Enables secure communication between different origins 🔹 Context API – Manages global state across components without prop drilling 🔹 Services Layer – Keeps API calls clean, reusable, and organized 💡 The goal of this post is to simplify how data flows between frontend and backend, and how we can structure our code for better scalability and maintainability. If you're learning React, Node.js, or full-stack development, this concept is very important! 📌 I love sharing knowledge and helping others grow in development. Let’s learn and build together! #WebDevelopment #ReactJS #NodeJS #FullStackDeveloper #Axios #CORS #ContextAPI #JavaScript #Coding #Learning #Developers

🚀 I thought I was optimizing my React app… but I was actually wasting time 😅 In my React projects, I used to spend a lot of time on performance optimization: 🔹 "useMemo" 🔹 "useCallback" 🔹 "React.memo" I thought this was the “right way”. But recently, I learned about the React Compiler. It can automatically handle many optimizations that we used to do manually. That made me realize… 👉 I was spending too much time optimizing things that React can handle for me. --- 🔹 What I learned React is evolving. With the compiler: 👉 Many unnecessary re-renders can be optimized automatically 👉 Less need for manual memoization in many cases But this doesn’t mean we stop thinking as developers. --- 🔹 What still matters We still need to focus on: 👉 Code splitting 👉 Lazy loading 👉 Following React best practices 👉 Writing clean and predictable components And most importantly: 👉 Following React rules properly --- 🔹 Reality check The React Compiler is still evolving and improving, so it’s important to understand where it helps and where manual optimization is still needed. So we should: 👉 Understand optimization concepts 👉 Use tools like React DevTools to analyze performance 👉 Apply manual optimization only when needed --- 💡 My takeaway 👉 Don’t over-optimize early 👉 Understand the problem first 👉 Keep learning and stay updated Because in tech: 👉 What worked yesterday may change today Still learning and improving 💻 How do you approach performance optimization in React? 👇 #ReactJS #FrontendDevelopment #WebDevelopment #PerformanceOptimization #JavaScript #LearningJourney #DeveloperMindset

Most developers use React. Very few understand how it actually works. Under the hood, React doesn’t update the DOM directly every time. It uses something called the Virtual DOM. Here’s the idea: When state changes, React creates a new Virtual DOM. Then it compares it with the previous one. This process is called diffing. After that, React updates only the parts that changed. Not the whole UI. That’s why React apps feel fast. But here’s the real takeaway: React is not “magic”. It’s just smart optimization. And when you understand this, you write better code. You stop: • causing unnecessary re-renders • misusing state • blaming React for performance issues Understanding how things work under the hood is what separates users from engineers. Are you using React… or actually understanding it? #React #FrontendDevelopment #WebDevelopment #JavaScript #SoftwareDeveloper #Programming #DeveloperJourney #LearnToCode #CleanCode