This would amount to potentially "restarting" the app every hour? That would cause potential errors every hour. I think I saw somewhere that it's actually quit

This would amount to potentially "restarting" the app every hour? That would cause potential errors every hour. I think I saw somewhere that it's actually quite easy to do this with OTP. You can just tell the supervisor to kill the children and when they respawn, they'll pick up the new credentials.