Your question is Optimizing High Throughput Code. 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).
Walk me through a time you had to optimize a piece of code that was struggling to handle high throughput.
Explain how you identified the bottleneck, evaluated possible solutions, and validated the improvement. Include the technical trade-offs, how you collaborated with others, and what you learned from the result.