It's definitely an interesting category right now - I've been following Citus and Vitess with interest for a while since they let you use PostgreSQL and MySQL respectfully with magic sharding sauce.
I haven't actually tried either yet - like you I'm waiting for more success stories (plus I don't currently have any problems that warrant that approach).
I haven't actually tried either yet - like you I'm waiting for more success stories (plus I don't currently have any problems that warrant that approach).
Slack adopted Vitess a few years ago.