Your question is Scaling for 10x Traffic. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How did you scale your system to handle a 10x increase in traffic?
Answer as if you were leading the effort. Focus on the decisions you made, the trade-offs you accepted, and how you coordinated engineering, product, and operations under pressure. Include how you identified the bottleneck, validated the fix, and protected reliability during the rollout.