Jon Miller writes on Slack #development:
PostgreSQL 12 has some new features that could be useful for FOLIO. https://www.postgresql.org/about/news/1943/
Specifically, if it supports case-insensitive collations, I'm hoping that you won't have to call tolower() anymore to do case-insensitive searches.
It would be nice to configure the database as case-insensitive by default in order to not have to use tolower() all over the place.