عرض عملي: مخازن بيانات Larkspur وتصميم التحويل عند الفشل

خطوة بخطوة

1. List workloads: orders and payments records, inventory, product catalog, sessions and carts, product search, reporting.
2. Choose: managed relational with multi-AZ for orders and inventory; document or key-value store for carts; cache for catalog reads; managed search for product search; read replica for reporting.
3. Set failover and backup per store with PITR windows and cross-region snapshot copies.
4. Planned mistake: assuming managed multi-AZ equals DR. Fix: add cross-region snapshot copy and a restore runbook; note the region-loss RTO is hours, not minutes.
5. Compare each store's RPO/RTO with the requirements; flag the gap on search (rebuilt from the source, so RPO is nil but rebuild time is long).
6. Add the web shop database migration approach: replication-based with a rehearsed cutover.