The JusDB Database Engineering Blog

Eliminate stale cache reads and thundering-herd stampedes by streaming MySQL binlog changes to Valkey via Debezium CDC. Full Java setup with embedded engine and XFetch.

Debezium 3.0 turns your database transaction log into a real-time event stream with full before/after row images. Learn to configure CDC for PostgreSQL WAL and MySQL binlog, avoid the offset storage trap, and monitor replication lag.

Redis Streams and Kafka both handle millions of events per second, but they solve different problems. Compare latency, retention, delivery guarantees, and operational overhead to choose the right architecture.

Deploy Kafka Connect with JDBC source connectors, Single Message Transforms, Dead Letter Queues for error handling, and consumer group lag monitoring.

Set up Debezium to stream MySQL and PostgreSQL changes to Kafka. Covers prerequisites, connector deployment, change event structure, and replication slot monitoring.