Lazy Loading and Server Actions for Faster Frontend Performance

We shipped 847KB of JavaScript to render a page that displays 3 paragraphs of text. In 2024. Last week, I rebuilt it with React Server Components. The client bundle dropped to 12KB. That is not a typo. 847 to 12. React Server Components are the biggest architectural shift in front-end development since the move from jQuery to React itself. And most teams are still ignoring them because the migration looks scary. Here is what actually changed: components can now run entirely on the server. No JavaScript ships to the browser for them. The data fetching happens where the data lives. The rendering happens before the response even leaves the server. The result? Pages load in under 200ms on 3G connections. Core Web Vitals go green overnight. And your users stop rage-clicking buttons that have not hydrated yet. But here is the part that makes senior engineers nervous: your entire mental model of React has to change. State does not work the same way. Context does not cross the server-client boundary. Your favorite libraries might not be compatible. The teams I see winning are not waiting for the ecosystem to catch up. They are drawing a clear line — server components for data display, client components for interactivity. Simple rule, massive impact. The front-end performance problem was never about slow browsers. It was about shipping too much code. What is stopping your team from adopting server components? #React #ServerComponents #FrontEnd #WebPerformance

👉🏻 Stop guessing where your Next.js code actually runs. - Most developers use Next.js… but many overlook the fundamental shift that makes it powerful: 👉 The execution boundary — Server vs Client. And that gap quietly leads to: - Slower applications - Bloated JavaScript bundles - Avoidable security risks If you want to move from just using the framework to mastering it, you need to understand this mental model. ⚡ Server Components — The Heavy Lifters Server Components run exclusively on the server. They are built for: • Data fetching → retrieve data at the source • Security → keep secrets and business logic protected • Performance → send zero JavaScript to the browser 👉 The result: faster load times and leaner applications. ⚡ Client Components — The Interactive Layer Client Components run in the browser. Use them only when necessary: • Interactivity → clicks, forms, UI behavior • State & lifecycle → useState, useEffect • Browser APIs → window, localStorage 👉 They power the experience—but add to your bundle. 💡 The Golden Rule ▪️Server Components → Data, Security, Performance ▪️Client Components → Interaction, State, Experience 📌 Practical Example Think of a dashboard: • Data fetching, layout → Server • Search, filters, actions → Client This separation ensures the browser only handles what truly requires interaction. 🚀 Why this matters Modern applications are judged by speed and efficiency. The more logic you keep on the server, the less JavaScript your users need to download, parse, and execute. #NextJS #WebDevelopment #ReactJS #FullStack #Clientside #Serverside #ReactFramework #Rendering #SIRISAPPS

⚛️ 𝗜𝗺𝗽𝗿𝗼𝘃𝗶𝗻𝗴 𝗥𝗲𝗮𝗰𝘁 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 — 𝗨𝘀𝗶𝗻𝗴 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴 As React applications grow, bundle size increases — which directly impacts initial load time. Common problem: • large JS bundle • slow first load • unnecessary code loaded upfront A better production approach is 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴. ❌ 𝗪𝗶𝘁𝗵𝗼𝘂𝘁 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴 𝘪𝘮𝘱𝘰𝘳𝘵 𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥 𝘧𝘳𝘰𝘮 "./𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥"; 𝘪𝘮𝘱𝘰𝘳𝘵 𝘙𝘦𝘱𝘰𝘳𝘵𝘴 𝘧𝘳𝘰𝘮 "./𝘙𝘦𝘱𝘰𝘳𝘵𝘴"; 𝘪𝘮𝘱𝘰𝘳𝘵 𝘚𝘦𝘵𝘵𝘪𝘯𝘨𝘴 𝘧𝘳𝘰𝘮 "./𝘚𝘦𝘵𝘵𝘪𝘯𝘨𝘴"; All components load upfront — even if not used immediately. ❌ 𝗪𝗶𝘁𝗵𝗼𝘂𝘁 𝗖𝗼𝗱𝗲 𝗦𝗽𝗹𝗶𝘁𝘁𝗶𝗻𝗴 𝘪𝘮𝘱𝘰𝘳𝘵 { 𝘭𝘢𝘻𝘺, 𝘚𝘶𝘴𝘱𝘦𝘯𝘴𝘦 } 𝘧𝘳𝘰𝘮 "𝘳𝘦𝘢𝘤𝘵"; 𝘤𝘰𝘯𝘴𝘵 𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥 = 𝘭𝘢𝘻𝘺(() => 𝘪𝘮𝘱𝘰𝘳𝘵("./𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥")); 𝘤𝘰𝘯𝘴𝘵 𝘙𝘦𝘱𝘰𝘳𝘵𝘴 = 𝘭𝘢𝘻𝘺(() => 𝘪𝘮𝘱𝘰𝘳𝘵("./𝘙𝘦𝘱𝘰𝘳𝘵𝘴")); 𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯 𝘈𝘱𝘱() {   𝘳𝘦𝘵𝘶𝘳𝘯 (     <𝘚𝘶𝘴𝘱𝘦𝘯𝘴𝘦 𝘧𝘢𝘭𝘭𝘣𝘢𝘤𝘬={<𝘱>𝘓𝘰𝘢𝘥𝘪𝘯𝘨...</𝘱>}>       <𝘋𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥 />       <𝘙𝘦𝘱𝘰𝘳𝘵𝘴 />     </𝘚𝘶𝘴𝘱𝘦𝘯𝘴𝘦>   ); } Now components load 𝗼𝗻𝗹𝘆 𝘄𝗵𝗲𝗻 𝗻𝗲𝗲𝗱𝗲𝗱. 📌 Where this helps most: • large dashboards • admin panels • multi-page apps • heavy third-party libraries 📌 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗕𝗲𝗻𝗲𝗳𝗶𝘁𝘀: • faster initial load • reduced bundle size • better performance • improved user experience 📌 𝗕𝗲𝘀𝘁 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀: • split at route level • avoid over-splitting • use meaningful fallbacks • monitor bundle size Loading everything at once works — but splitting wisely improves performance significantly. 💬 Curious — do you apply code splitting at route level or component level? #ReactJS #CodeSplitting #Performance #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #Optimization

🚀 Sharing a simple Expense Tracker / Budget Planner I built while learning frontend development. This project allows users to: • Set a budget • Add expenses • View total expenses and remaining balance 🛠️ Tech Stack: HTML | CSS | JavaScript 🔗 Live Demo: https://lnkd.in/g5RgyEsX This helped me practice DOM manipulation and handling user input in JavaScript. I’m planning to improve this by adding features like local storage, edit/delete options, and data visualization. Open to feedback and suggestions! #WebDevelopment #JavaScript #Frontend

Random thought from the shower this week 🚿 What if there was a simple way to analyze a website’s performance and actually understand why it’s slow, not just see a bunch of numbers? That idea turned into a small project I’ve been building: Core Web Vitals Playground. You paste any URL and it analyzes the site using the PageSpeed Insights API, then breaks down metrics like LCP, CLS, INP, FCP and TBT with a visual dashboard so you can quickly see what’s going on. The goal is to make performance issues easier to understand instead of just staring at Lighthouse scores. Tech stack: - Next.js - TypeScript - Tailwind - PageSpeed Insights API I built it mainly as a playground to explore frontend performance and Core Web Vitals in a more visual way. Sharing a quick demo in the video below. Repo if you're curious: https://lnkd.in/dZ4W38Wd Always fun when a random idea turns into a project 😄

🧵 React Server Components: the change that took everyone by surprise ⚡ Forget everything you know about React. Server Components (RSC) is not just another feature, it's a completely different way to build web applications. What are Server Components? Components that render only on the server, sending minimal JavaScript to the client. They blur the line between backend and frontend in a way that seems like magic. Why this changes the game: 🔹 Zero bundle — imports a giant library without weighing down the client 🔹 Direct database access — query the DB within the component, without an API layer 🔹 Automatic code splitting — the server decides which JS the client needs 🔹 Streaming UI — HTML arrives gradually, as the data becomes ready The mental shift: Traditional React: client fetches data → renders → hydrates RSC: server sends rendered UI → client receives HTML → selective hydration In practice: Dashboards run queries on the server, results arrive instantly. Product page fetches data without exposing API key. Admin panel doesn't send authentication logic to the browser. SEO becomes trivial — it's just HTML. The catch: You have to unlearn client-side patterns. useState, useEffect, event handler — none of that exists in Server Component. Your component tree becomes a mix of server and client boundaries. 🧠 Tip: RSC doesn't replace Client Components — they complement each other. Think of RSC as your data layer and Client Components as your interaction layer. This isn't just Next.js hype. The React team is betting the future of the framework on this model. The question isn't "if," it's "when" you'll need to master it. Are you already building with RSC or waiting for the ecosystem to stabilize? #react #servercomponents #nextjs #rsc #webdev #javascript #frontend #architecture #streaming

𝐘𝐨𝐮 𝐝𝐨𝐧’𝐭 𝐧𝐞𝐞𝐝 𝐚 𝟏𝟓𝐦𝐛 𝐛𝐮𝐧𝐝𝐥𝐞 𝐭𝐨 𝐬𝐡𝐢𝐩 𝐚 𝐥𝐚𝐧𝐝𝐢𝐧𝐠 𝐩𝐚𝐠𝐞:   We’ve spent the last decade making web development more "powerful," but we’ve accidentally made it 10x more complex. We're over-engineering ourselves into a corner.   The 2026 Web Stack Reality:   • Hydration is a heavy tax: Is your site interactive, or just a document?  • Server Components are a tool, not a religion: Use them where they make sense.  • Shipping Less JS > Adding more RAM: Optimization starts at the architecture level.   𝐓𝐡𝐞 𝐓𝐚𝐤𝐞𝐚𝐰𝐚𝐲: The most senior developers I know are currently deleting code, not adding it. They are choosing "boring" tech that scales over "shiny" tech that breaks.   Let’s get back to basics: Semantic HTML, lean CSS, and JavaScript only where it’s actually required.   The web should be fast by default, not by effort. What are your thoughts on this do comment below!   #WebDev #Javascript #React #NextJS #CodingLife #WebPerformance

🚀Why Loading Too Much Data Can Break Your Application While working on an infinite scrolling feature in React, I came across an important real-world problem 👇 ❌ Problem: If the backend sends a very large amount of data at once, both the website and server start slowing down. 🔍 Why does this happen? ▪️ Large API responses take more time to transfer over the network. ▪️The browser struggles to render too many items at once. ▪️Memory usage increases significantly. ▪️Server load increases when handling heavy requests. 👉 I was using the GitHub API, and it helped me understand how important it is to control the amount of data being fetched. 📦 Solution: Pagination + Infinite Scrolling ▪️Instead of loading everything at once: ▪️Fetch data in smaller chunks (pagination) ▪️Load more data only when needed (infinite scroll). ⚡ Benefits: ▪️Faster initial load time ▪️Better performance ▪️Smooth user experience ▪️Reduced server stress 💡 What I learned: ▪️Efficient data fetching is crucial in frontend development ▪️Performance optimization matters as much as functionality ▪️Real-world applications are built with scalability in mind 🎯 Key takeaway: It’s not about how much data you can load — it’s about how efficiently you load it. #ReactJS #JavaScript #WebDevelopment #Frontend #Performance #LearningInPublic #CodingJourney

A few things that consistently improve web applications at scale: • 𝐏𝐫𝐢𝐨𝐫𝐢𝐭𝐢𝐳𝐢𝐧𝐠 𝐬𝐢𝐦𝐩𝐥𝐢𝐜𝐢𝐭𝐲 in architecture over unnecessary complexity • 𝐖𝐫𝐢𝐭𝐢𝐧𝐠 𝐜𝐨𝐝𝐞 𝐭𝐡𝐚𝐭 𝐢𝐬 𝐞𝐚𝐬𝐲 to read, not just efficient • 𝐌𝐞𝐚𝐬𝐮𝐫𝐢𝐧𝐠 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 instead of guessing • 𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐬𝐜𝐚𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲 in mind from the start Applied across full-stack JavaScript environments to deliver reliable, maintainable systems. #SoftwareEngineer #WebDevelopment #FullStackDeveloper #SystemDesign #CleanCode #Performance #TechInsights

Day 56 of Web Dev 🌐 | Day 154 of my Coding Journey 💻 | Day 3 of Next.js 16 ⚡ 𝗦𝗲𝗿𝘃𝗲𝗿 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁 (default in Next.js) → Runs on Node.js, never ships JS to the browser → Perfect for: DB fetches, async data, heavy logic → console.log? Prints in your TERMINAL 𝗖𝗹𝗶𝗲𝗻𝘁 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁 ('use client' at the top) → Ships JavaScript to the browser → Needed for: useState, onClick, any interactivity → console.log? Prints in DevTools The boundary between them is just two words: 'use client' And data flows one way — server renders first, passes props down to the client. Small concept. Massive unlock. #WebDevelopment #NextJS #React #LearningInPublic #CodingJourney