Change Data Capture for Live Data Feeds
Learn how Change Data Capture (CDC) turns database mutations into a real-time event stream that powers live dashboards, caches, and downstream services.
What Is Change Data Capture?
Change Data Capture (CDC) watches a database for inserts, updates, and deletes and emits each change as an event.
Instead of polling tables, downstream systems subscribe to the change stream and react in real time.
Why Not Just Poll?
Polling a table every few seconds is wasteful and laggy. It misses fast intermediate states and hammers the database.
CDC captures every committed change exactly once, with low latency and no extra query load.
All lessons in this course
- Message Queues for Event-Driven Systems
- Stream Processing Frameworks
- Real-time Analytics Integration
- Change Data Capture for Live Data Feeds