The JusDB Database Engineering Blog
Deep dives on PostgreSQL, MySQL, MongoDB and more — performance tuning, high availability, migrations and production war stories from our DBAs.
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Solving Cache Invalidation and Stampede in Valkey with Debezium CDC
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.
PostgreSQL LISTEN/NOTIFY: Real-Time Application Events Without Kafka
Debezium 3.0: Real-Time CDC from PostgreSQL, MySQL, and MongoDB
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.
Kafka Connect: JDBC Source, SMTs, Dead Letter Queues, and Connector Monitoring
Operate Kafka Connect database pipelines with current JDBC and Debezium settings, protected REST access, deliberate DLQ handling, and task-level monitoring.
PostgreSQL 17 Logical Replication: Failover Slots and Row Filtering
Logical replication in PostgreSQL has a critical gap: slots do not survive failover. PostgreSQL 17 finally fixes this with failover slots, plus adds row and column filtering for selective replication.
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