System design can feel overwhelming, especially when you’re prepping for interviews. I recently studied scalable architectures and found it super helpful to think through real-world systems. Like, how does Airbnb handle search results for millions of listings? Asking questions like that made concepts click for me.

One resource I loved was the "System Design Primer" on GitHub. It's loaded with examples and breakdowns. I also practiced with peers—having someone quiz you can expose gaps in your understanding. Have any of you tried similar methods or found other useful resources? I'm curious what has worked for you!