Database Insights

Enable MySQL semi-synchronous replication to prevent data loss during failover. Configure AFTER_SYNC wait point, tune timeouts, and monitor semi-sync status.

Systematically diagnose MySQL replication lag: single-threaded applier, large transactions, missing replica indexes. Enable parallel replication and use pt-heartbeat.

PostgreSQL disaster recovery requires more than just running pg_dump — it needs WAL archiving, PITR capability, regular restore testing, and clear RTO/RPO targets. Here's how to build it.

Deploy a production PostgreSQL HA cluster with Patroni and etcd. Covers configuration, patronictl commands, HAProxy integration, and failover procedures.

Day-to-day MongoDB replica set operations: adding/removing members, triggering elections, diagnosing replication lag, and managing oplog size.

Set up PostgreSQL streaming replication from scratch. Covers primary configuration, standby base backup, replication monitoring, and manual failover promotion.

PostgreSQL 13 will officially reach end of life on November 13, 2025. After this date, the PostgreSQL Global Development Group will stop releasing security patc

Configure MySQL Orchestrator for automated failover and replication topology management. Step-by-step guide covering installation, Raft mode, and failover testing.

TiDB uses Raft consensus protocol through TiKV to replicate every region across three or more nodes. Here's how leader election, log replication, and region management work in practice.

PostgreSQL 17 finally adds native incremental backup support — allowing subsequent backups to capture only changed blocks since the last full backup.

MySQL offers multiple replication topologies — traditional async replication, semi-sync, Group Replication, and InnoDB Cluster. Understanding the trade-offs determines whether your failover takes seconds or minutes.

Learn how JusDB optimized a TimescaleDB cluster ingesting billions of IoT readings monthly, achieving 10× faster writes and 65% storage reduction.