Your question is Real-Time Chat Streaming Pipeline. 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 real-time message streaming and analysis pipeline that can handle 100,000 concurrent agent-customer chats with sub-second latency for Cresta (CA). Explain the ingestion, processing, storage, and serving layers, including message ordering, delivery guarantees, schema evolution, and real-time analysis. Cover capacity planning, failure recovery, observability, data quality, retention, and a strategy for replaying or backfilling historical messages.