Fire an OrderPlaced event and watch it flow producer → broker → many consumers (Inventory, Email, Analytics, Fraud) reacting at once. Add or kill a consumer live, slow one to watch its backlog build, and switch a queue to a topic — the whole system breathing on one canvas.
OrderPlaced event (or auto-stream them) and watch it flow producer → broker → consumers. Switch topic↔queue, kill a consumer, or slow one — and see how the system responds.Try: turn on auto-stream in topic mode, then slow Fraud check — only its inbox grows. Now kill Email — orders still flow to everyone else. Switch to queue and watch events spread one-per-consumer instead.