Nice! I'm one of the authors of pg-bifrost which is in the same space. Have you thought about / have solved sharding consumption across multiple slots / multi consumers to increase throughput? This is on my radar but not something I've investigated yet.
The issue we've ran into is some team at work decides to re-write an entire table and things get backed up until they stop updating rows.
The issue we've ran into is some team at work decides to re-write an entire table and things get backed up until they stop updating rows.