Databases & HA
Replication, failover, pooling and keeping data alive when a node is not.
PostgreSQL High Availability: A Production Manual for Patroni, etcd v3, HAProxy and PgBouncer
How to build a PostgreSQL HA cluster with automatic failover and synchronous replication using Patroni, an etcd DCS, HAProxy health-check routing and PgBouncer connection pooling.