Your question is Webserver Heavy Load. 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).
Heavy load on a single webserver: discuss load balancing, scaling, distributed system concepts, and troubleshooting 400/500 errors and data synchronization across webservers
Asked in the systems round stage. Distributed systems and troubleshooting discussion.
Address how you would identify the bottleneck, introduce load balancing and horizontal scaling, preserve consistency across webservers, and debug client-side versus server-side failures. Explain your observability plan, deployment strategy, and how you would prevent a scaling change from creating new failure modes.