What is CDC?
Change data capture records inserts, updates, and deletes from a source system so downstream systems can stay in sync.
- Reads transaction log or events
- Supports near-real-time sync
- Needs ordering and deduplication
What is CDC?
Tagged with replication
2 cards
Primary-replica database setup
A primary handles writes while replicas serve copied data, often improving read scale and availability.
- Writes usually go to primary
- Replicas can lag
- Read/write split adds complexity
Primary-replica database setup