Take a snapshot of the database.
Always have a staging environment and deploy to it before deploying to production environment.
Check if latest commits have some migrations.
Check if requirements.txt has been updated or any new packages have been installed.
Try not to deploy during “heavy” hours.
Deploy often and deploy small changes.
Move fast and break things - Mark Zuckerberg
Try not to break too much stuff.. - Hassan Mian
Break things and move fast from there - Erik Svedin
Deploy before hitting the gym - Mohammed Hammoud