Change Data Capture Pipeline¶
Turn committed database changes into an ordered event stream without polling.
flowchart LR J[Junior: why CDC] --> M[Middle: snapshot and WAL] --> S[Senior: failure modes] --> P[Professional: CDC at scale]flowchart LR DB[(Postgres)] --> WAL --> Debezium --> Kafka --> Sink| Level | Guide | You are done when | |---|---|---| | Junior | Definition and why | You can explain why polling misses changes. | | Middle | How it works | You can trace snapshot-to-stream cutover. | | Senior | Failures and mistakes | You can protect ordering, replay, and WAL disk. | | Professional | Best practices and scale | You can operate high-volume CDC. | Practice rule: Monitor source-log retention as carefully as consumer lag.