The problem I kept running into Every time I practiced system design, I'd hit the same wall: I'd sketch out a rough idea for "design WhatsApp" or "build a URL shortener," and then... nothing. No feedback.
Source: [Dev.to](https://dev.to/nithiin7/i-built-an-ai-system-design-coach-clone-it-try-it-break-it-1j4b)