This article was written in 2015, a year before idle_in_transaction_session_timeout parameter was added (in Postgres 9.6) - which is unfortunately still disable

This article was written in 2015, a year before idle_in_transaction_session_timeout parameter was added (in Postgres 9.6) - which is unfortunately still disabled by default, but that's the easiest way to make sure no transaction sits idle for too long.