The official PostgreSQL Documentation gives a good start, as well as explaining the many considerations involved in scaling. http://www.postgresql.org/docs/9.4

The official PostgreSQL Documentation gives a good start, as well as explaining the many considerations involved in scaling. http://www.postgresql.org/docs/9.4/interactive/different-replication-solutions.html http://www.postgresql.org/docs/9.4/interactive/different-rep...