عرض عملي: إعادة بناء البيانات المشتقة بعد فقدان عنقود Kafka

خطوة بخطوة

1. Declare the scenario: the Kafka cluster is lost; the orders database is intact.
2. Stand up a new cluster and recreate topics from configuration as code.
3. Rebuild the search index and read models from the orders database; measure rate and total time.
4. Planned mistake: resume consumers from the latest offset and silently skip a gap of events. Fix: backfill from the source of truth for the gap window and reconcile counts.
5. Warm caches gradually to protect the database.
6. Record the timeline, the data gap, and the remediation actions.

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