Your question is Real-Time Notification System. 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).
Design a notification system that handles real-time updates for a dashboard.
Clarify the event sources, delivery semantics, supported clients, and consistency expectations. Explain how you would design ingestion, fan-out, connection management, notification prioritization, storage, retries, observability, and graceful degradation. If machine learning is used, cover model training, online inference, evaluation, drift, and training-serving consistency.
