[lordofgibbons]

This looks great! I have a couple of questions:

1) Is it possible to start off with plain Postgres and add pgdog without scheduled downtime down the road when scaling via sharding becomes necessary?

2) How are schema updates handled when using physical multi-tenancy? Does pgdog just loop over all the databases that it knows about and issues the update schema command to each?

[levkk]

1. Yup, we support online resharding, so you don't need to deploy this until you have to.

2. That's right, we broadcast the DDL to all shards in the configuration. If two-phase commit [1] is enabled, you have a strong guarantee that this operation will be atomic. The broadcast is done in parallel, so this is fast.

[1]: https://docs.pgdog.dev/features/sharding/2pc/