عرض عملي: حساب التوافر الحقيقي لمسار الدفع من اعتمادياته

خطوة بخطوة

1. Draw the dependency graph, hard versus soft dependencies.
2. Collect measured availability of each hard dependency.
3. Multiply the serial hard dependencies and note the cap.
4. Planned mistake: multiply nines for every dependency including optional ones; fix by marking recommendations as soft with a fallback.
5. Show how a cache fallback for the FulfillCo stock check raises the total, and by how much.

Prepares SRB-005-LAB1.