We need to run regular maintenance tasks on our database, which we usually perform with pgagent https://www.pgadmin.org/docs/pgadmin3/1.22/pgagent.html

Pgagent will be installed as a service on the application server, but for pgagent to work we need the pgagent extension deployed in the application database, see also https://www.pgadmin.org/docs/pgadmin3/1.22/pgagent-install.html#database-setup