Yes, ack on both. We already do point-in-time-restore your database with 1-minute granularity. And the docs are thin currently; we will add more to them.
We're using the same core control plane approach that still powers multiple PostgreSQL services like Heroku Postgres, Citus/Azure Cosmos DB for PostgreSQL and Crunchy Bridge. Ubicloud is being built by core members of the same teams that built those products, improved with learnings. We are yet in preview and not as feature complete, but we will continue adding more features, building them in the open.
We also have a talk that one of our core team members gave earlier today at PGConf.EU that goes through some of the inner workings of our managed service. Its video is not posted yet given it's been just several hours, but should be available here once ready:
1: https://www.ubicloud.com/docs/managed-postgresql/backup-and-...