عرض عملي: أحداث الطلبات والمخزون في Larkspur، من الفهرس إلى المستهلكين

خطوة بخطوة

1. List business facts: order placed, stock changed, shipment dispatched, return received.
2. Assign one owner each and write the schema with examples.
3. Planned mistake: a team proposes an event "OrdersTableRowUpdated" carrying every column. Fix: replace it with OrderPlaced and OrderCancelled, business facts independent of the table layout.
4. Register consumers: fulfillment, finance, CRM sync, analytics; note each consumer's need.
5. Introduce a change: add "giftMessage" as optional and show consumers unaffected; then show a breaking change handled with a v2 event and a dated retirement of v1.
6. Decide, with the checklist, whether to adopt a backbone now and record the decision.