Important PostgreSQL connector settings

pg_hba.conf

The pg_hba.conf file is used to specify the IP addresses from which the server will accept logins, as well as which databases and users are allowed access. 

wal_level

This parameter determines the level of information that is written to the WAL files.

max_wal_senders 

This parameter defines the maximum allowable number of concurrent connections from standby servers or streaming base backup clients. It should be increased by two (+2) from its desired value.

archive_command

This parameter sets the shell command that will be called to archive a WAL file.