Great post. And if you want some control support for your cronjobs perl App::Cronjob[1] can provide features such has exclusive locking, so a job won't run if the previous run is still going, or provide a timeout, and some options for sending mail on success or failure

[1]https://metacpan.org/pod/App::Cronjob https://metacpan.org/dist/App-Cronjob/view/bin/cronjob