Actually, I'm under the impression it's way more common to migrate language or framework than data storage. I externalize most of my business logic to postgres

Actually, I'm under the impression it's way more common to migrate language or framework than data storage. I externalize most of my business logic to postgres for that reason (plus, it's incredibly performant, especially since you don't keep requesting connections from connection pool for each single part of the computation). My backend app handles request sanitizing, providing endpoints, etc. All data processing is made in the database. Love it.