Which method of ensuring high availability of a PostgreSQL database do you prefer to use?

To ensure high availability of PostgreSQL, I prefer to use replication with automatic failover using Patroni.

Main reasons:

• Replication: Set up streaming replication where one server is master and others are replicas, continuously synchronized.

• Automatic failover: Patroni monitors the master and automatically switches a replica to master if it fails, minimizing downtime.

• Configuration via Etcd or Consul: For cluster coordination and state storage.

• Monitoring and management: Patroni simplifies cluster management and integrates with monitoring systems.

This approach provides fault tolerance and minimizes data loss, which is critical for business applications.