The JusDB Database Engineering Blog

Configure PostgreSQL logical replication for selective table sync, zero-downtime upgrades, and multi-tenant setups

Understand Kafka from a database perspective — partitions, offsets, consumer groups, and durability guarantees

MySQL replication filters let you replicate only specific databases or tables — but misconfiguration can silently drop transactions. Here's how to use binlog-do-db, replicate-do-db, and replicate-do-table safely.

A comprehensive guide to MySQL replication lag — why it happens, why Seconds_Behind_Master lies, how to measure accurately with pt-heartbeat, and how to fix it with multi-threaded replication and LOGICAL_CLOCK parallelism.

GTIDs eliminate manual binlog position tracking in MySQL replication. This guide covers enabling GTIDs, CHANGE MASTER TO MASTER_AUTO_POSITION, and failover.

Deploy Airbyte to replicate data from MySQL, PostgreSQL, and MongoDB to your warehouse — connectors, scheduling, and transforms

Build fault-tolerant MySQL clusters with Group Replication. Learn multi-primary vs single-primary modes, conflict resolution, network partitioning handling, and failover strategies.

Set up MySQL Galera Cluster for synchronous multi-master replication — configuration, split-brain avoidance, and monitoring

ProxySQL's read/write splitting routes SELECT queries to replicas and writes to the primary automatically — but getting the configuration right requires understanding hostgroups, query rules, and lag-aware routing.