🚀 Built a Real-Time Coding Platform Experience from Scratch Over the past few days, I’ve been refining and scaling a full-stack coding platform with a strong focus on real production behavior and user experience. Here’s what I worked on: Real-Time Submission System - Implemented polling + WebSocket updates - Handled QUEUED → PROCESSING → COMPLETED flow - Fixed UI not updating without refresh Frontend Architecture - Built dynamic result UI (test cases, stdout, stderr, compile output) - Handled async edge cases and undefined states - Improved loading and fallback UX Socket Integration - Fixed incorrect socket initialization - Proper .on / .off lifecycle handling - Prevented memory leaks and duplicate listeners CI/CD Debugging - Fixed GitHub Actions npm ci failure - Resolved package-lock mismatch issues - Improved backend pipeline reliability Activity Heatmap - Built GitHub-style solve heatmap - Implemented weekly/month grouping - Fixed alignment and responsiveness issues UX Improvements - Added scroll-to-top on navigation - Improved responsiveness for laptop and mobile - Cleaned up UI for better readability This wasn’t just about building features — it was about debugging real-world problems, handling async systems, and thinking like a production engineer. Still refining, but getting closer to a solid system. 🔥 Always learning. Always shipping. Live URL : https://lnkd.in/d5UrvkrZ #FullStackDevelopment #ReactJS #NodeJS #WebSockets #SystemDesign #Frontend #Backend #BuildInPublic #trend

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