> Yes, every second Friday there was mild panic as all the errors and alarms went off when Heroku took the database offline and did whatever they needed to do,

> Yes, every second Friday there was mild panic as all the errors and alarms went off when Heroku took the database offline and did whatever they needed to do, then restarted the app. This whole process took about 10 minutes The heck? Like sure, people may call me "too perfect", but 20 minutes of outage for a Postgres database or a Redis instance / month is entirely not acceptable? Crossing out the less professional words there. We're not particularly ambitious at work at guaranteeing 99.5 SLA to our customers, but 20 minutes of outage / month is already 99.5%. Availability only goes down if your database just has that. We observe that much downtime on a postgres cluster in a year.