عرض عملي: رفض الدفع وتشغيل التعويضات

خطوة بخطوة

1. Use a test card number that payments declines.
2. payments replies PaymentDeclined; the saga moves to COMPENSATING.
3. The orchestrator sends ReleaseStock; inventory releases the reservation; the order becomes CANCELLED.
4. Planned mistake: write the compensation assuming a reservation exists; trigger the decline before stock replied and it throws. Fix: tolerate a missing reservation and record the cancellation.
5. Replay ReleaseStock and confirm stock is unchanged the second time.
6. Add a timeout case: stop payments; after the deadline the saga compensates.