System migrations are extremely complicated. This section only touches on a small number of concepts. Please refer to these PostgreSQL documentation links for a deeper exploration of the material we covered:
- The pg_basebackup Utility: https://www.postgresql.org/docs/current/static/app-pgbasebackup.html
- Log-Shipping Standby Servers: https://www.postgresql.org/docs/current/static/warm-standby.html
- Hot Standby: https://www.postgresql.org/docs/current/static/hot-standby.html