Designing a real time expense tracking app 🤯 Guys! This looks scary at first but it’s actually super simple 😅 Let me break it down: * Clean frontend for web and mobile * Async backend with FastAPI * Postgres for consistency * Redis for caching 🚀 * WebSockets for real time sync * JWT auth and HTTPS for security ( you know the drill if you watched my previous videos 😁) This is how you design systems that scale without overengineering them. If you’re learning system design backend engineering o