"How Do You Get Data Out of the Source Database?"

What They're Really Testing The Three Extraction Methods The Unlock Why Companies Care At Uber, query-based CDC on the ride table missed soft deletes (canceled rides) because the application set a status flag instead of updating the updated_at column. At Netflix, full-load extraction of the content metadata table took 4 hours and blocked the source database's connection pool during peak streaming hours. At Stripe, log-based CDC (Debezium) captures every payment state change with sub-second latency and zero impact on the production PostgreSQL cluster. The 60-second framework: 'For real-time sync, I would use log-based CDC via Debezium reading the PostgreSQL WAL, publishing change events to Kafka, and consuming into the warehouse. It captures inserts, updates, and deletes with sub-second lat