That article covers the basis of how we do upgrades at Instacart, but is quite old. This is a more modern look at how we accomplish the process. We have used th

That article covers the basis of how we do upgrades at Instacart, but is quite old. This is a more modern look at how we accomplish the process. We have used this process to upgrade a lot of very large and very active databases successfully. https://www.instacart.com/company/how-its-made/zero-downtime-postgresql-cutovers/ https://www.instacart.com/company/how-its-made/zero-downtime...