Your question is Low-Latency Analytics Design. 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).
Tell me about a solution design for low-latency data analytics at Chargebee, and how you would adapt it for two customer types: one with high data inflow and one with low data inflow.