role-database:replication-ha

To configure PostgreSQL streaming replication for high availability, this Skill designs a topology with a synchronous standby node. It establishes continuous operation and automated failover mechanisms to ensure data consistency and prevent split-brain scenarios during an outage.

Synchronous database replication ensures RPO=0 by confirming writes across nodes before committing, while asynchronous replication allows primary nodes to commit independently. This Skill configures both modes to balance data consistency and read scaling performance.

Yes, you can use this to set up multi-region replication for MongoDB and Cassandra. It designs high availability topologies across diverse database engines, configuring replication modes and consensus protocols like Raft and Paxos to ensure continuous operation.

Automated failover prevents split-brain in database clusters by leveraging consensus protocols like Raft and Paxos. This Skill configures these mechanisms to ensure nodes agree on a single primary, maintaining data consistency during network partitions or node failures.

You need RPO=0 database replication for financial transactions where zero data loss is strictly required during failures. This Skill implements synchronous replication to guarantee data consistency across primary and standby nodes for critical operations.

The best way to monitor database replication lag and health is by establishing comprehensive tracking across your topology. This Skill sets up monitoring mechanisms to ensure continuous operation and data consistency for high-traffic applications.