Vignesh Mudaliyar’s Post

A lot of frontend complexity is not actually a UI problem. It’s a data modeling problem. The moment your UI starts feeling messy or too conditional, there’s a good chance the real issue is happening before rendering even starts. It’s also about building a system where: Raw data → normalized model → predictable UI That shift changes everything. The more I work on frontend systems , the more I believe this: Frontend is not just presentation. It’s architecture. #FrontendDevelopment #WebDevelopment #SoftwareArchitecture #ReactJS #NextJS #TypeScript #JavaScript #CleanCode #FrontendEngineer #UIDevelopment #Programming #Developer #SoftwareEngineering #CodeQuality #SystemDesign

We had a bug in production where UI was showing outdated data. No errors. No crashes. Just incorrect information. Here’s what happened 👇 Problem: → Users saw stale data after updates → UI didn’t reflect latest API response Root cause: ✖ Derived state stored separately ✖ Not synced with original data ✖ Multiple sources of truth What I changed: ✔ Removed stored derived state ✔ Computed values directly from source ✔ Used memoization only where needed Result: → Consistent UI → No stale data issues → Simplified logic Key insight: If something can be derived… Don’t store it. That’s how subtle bugs enter systems. #ReactJS #Debugging #Frontend #SoftwareEngineering #CaseStudy #JavaScript #StateManagement #Engineering #Programming #Tech

Writing a JavaScript Framework: Project Structuring Simplified   When building a JavaScript framework, structuring your project is everything. A well-designed architecture ensures scalability, maintainability, and performance.   This visual (inspired by RisingStack Engineering) highlights how different layers interact within a framework: 🔹 Middlewares – Handle core functionalities like routing, rendering, and data interpolation 🔹 Helpers – Tools like compiler and observer that power reactivity and optimization 🔹 Symbols & Components – The building blocks that connect logic with UI 🔹 Your App – The central piece that ties everything together seamlessly   💡 The takeaway? A strong separation of concerns and modular design is what makes frameworks robust and developer-friendly. If you’re exploring how frameworks work under the hood, this is a great starting point to understand the bigger picture.   ✨ Build smarter. Structure better.   #JavaScript #WebDevelopment #Frontend #Frameworks #SystemDesign #SoftwareArchitecture #FullStack #Developers #Coding #TechLearning

Your code is messy not because you're bad… It’s because you're mixing UI, Logic, and Data in one place. This is where Separation of Concerns (SoC) changes everything Imagine this: You click a button → API call happens → validation runs → UI updates Now ask yourself… Is all of that happening inside ONE component? If yes, that’s the problem. Here’s the better way: - UI (Presentation) Only handles what users see (No business logic, no API calls) - Logic (Brain) Handles validation, decisions, workflows - Data (Source) Handles API calls, DB, state Clean flow looks like this: UI → Logic → Data → Logic → UI Real shift (especially in React / Next.js): -Before: Everything inside one component -After: UI → Components Logic → Custom Hooks / Services Data → API layer If your components are getting “fat”… It’s a signal — you’re breaking SoC. Start small. Refactor one component today. You’ll feel the difference immediately. visit my website: https://lnkd.in/dFB_bqGu #webdevelopment #reactjs #nextjs #frontend #softwareengineering #coding

Node.js is built on an event-driven architecture. Every action — like clicking a button — can trigger an event that runs specific logic on the backend. In this video, I explain how EventEmitter works in Node.js: • Creating custom events • Listening to events using on() • Triggering events using emit() • Real-world flow (like, subscribe, notifications) Example: Frontend action → Event triggered → Backend executes logic This pattern is widely used in: • Backend systems • Real-time applications • Scalable architectures 🎓 Learn Backend Engineering & System Design: 👉 https://lnkd.in/gpc2mqcf 💬 Comment EVENT if you want a deeper Node.js series. #NodeJS #BackendDevelopment #SystemDesign #JavaScript #SoftwareEngineering #APIDesign #DeveloperEducation

🤓 Recently went through the FREE Frontend Architecture course by Frontend at Scale — and it genuinely changed how I think about building frontend systems.👉 Frontend isn’t about components or frameworks. It’s about the flow — requirements → data → rendering → performance. Made me rethink how I design apps: Less “how do I build this component?” More “how does this system scale over time?” Curious — how do you approach frontend architecture? Do you think in components or in systems? Drop your thoughts 👇 (would love to learn from different perspectives) & comment "LINK." I will share it in DMs. #Frontend #Architecture #WebDev #SystemDesign #angular #react #computer #programming #code #system #lead

🚀 Day 954 of #1000DaysOfCode ✨ Micro Frontend for Scalable Architecture (Explained Simply) As applications grow, managing a single large frontend codebase can become difficult and slow. In today’s post, I’ve explained the concept of Micro Frontends in a simple and practical way, so you can understand how large-scale applications are built and managed efficiently. Instead of one big frontend, micro frontends break the app into smaller, independent pieces — each owned by different teams and deployed separately. This approach improves scalability, team autonomy, and faster development cycles without blocking each other. It’s especially useful in large organizations where multiple teams work on different parts of the same product. If you’re aiming to build or work on scalable frontend architectures, this concept is definitely worth understanding. 👇 Do you think micro frontends are the future, or do they add unnecessary complexity? #Day954 #learningoftheday #1000daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #CodingCommunity #Architecture

Most bugs in production don’t come from complex systems... 💻 They come from simple misunderstandings. Here’s one that even experienced developers occasionally get wrong 👇 🧠 Three snippets. Same intention. Different behavior. // 1 function logValue(value) { if (value === 2) return; console.log(value) } for (let i = 1; i < 5; i++) { logValue(i) } // 2 for (let i = 1; i < 5; i++) { if (i === 2) return; console.log(i) } // 3 [1,2,3,4].forEach((num) => { if (num === 2) return console.log(num) }) 🔍 What’s actually happening? Snippet 1 → Safe abstraction return exits only the function Loop continues Output: 1, 3, 4 Snippet 2 → Dangerous assumption return exits the entire enclosing function Loop stops completely at 2 Output: 1 👉 If this is inside a React component or handler → you just aborted execution. Snippet 3 → Misleading familiarity return exits only the callback, not the loop forEach keeps iterating Output: 1, 3, 4 💡 Takeaway Control flow is not about syntax - it's about execution boundaries. Ask yourself: “What exactly am I returning from?” Function? Loop? Callback? Component? Because JavaScript won’t warn you. It will just… behave correctly in a way you didn’t expect. 🧩 Rule of thumb return in functions → exits function return in forEach → skips current iteration return in loops (top-level) → exits enclosing function (not just loop) The code looks similar. The runtime behavior is not. And that difference is where real-world bugs live. #javascript #reactjs #webdevelopment #softwareengineering #frontend #cleanCode

We experimented with Micro-frontends architecture in 75 different projects. The insights were eye-opening. When should you consider micro-frontends for your application? Is it a silver bullet for scaling teams and codebases, or is it overkill? In our experience, the decision stemmed from a few key challenges that traditional monoliths couldn't solve. Fragmented team structures, varying tech stacks, and the need for a modular approach were the driving forces. We needed independent deployments, and micro-frontends offered just that. Breaking down a large application into smaller, focused pieces not only enabled parallel development but also reduced the fear of bottlenecks. However, it's not all roses. Splitting a frontend can lead to increased complexity, especially in terms of inter-module communication and shared state management. Techniques like custom events or using a shared API gateway can solve these issues, but they require careful planning. Reflecting on our journey, a critical moment was when we decided to prototype our ideas using 'vibe coding'—allowing quick iterations and feedback loops. This approach not only accelerated our understanding of the architecture but also revealed unforeseen integration challenges early on. Here's a snippet demonstrating a simple way to register a micro-frontend with a parent component using TypeScript: ```typescript interface MicroFrontend { name: string; mount: (element: HTMLElement) => void; } const registerMicroFrontend = (mf: MicroFrontend, elementId: string) => { const element = document.getElementById(elementId); if (element) { mf.mount(element); } }; registerMicroFrontend({ name: 'MyApp', mount: (el) => console.log('Mounting', el) }, 'app-container'); ``` Are micro-frontends a part of your tech stack yet? I'm curious to hear how others approach splitting their frontend applications. What challenges have you faced, and how did you overcome them? #WebDevelopment #TypeScript #Frontend #JavaScript