[mebcitto]

This is very interesting, thanks for offering to answer questions. I'm curious of two things:

* Are you also considering going the Postgres extension route, like Citus? It is after all the best attempt at sharding Postgres so far.

* If you are willing to share, why not doing this from inside Planetscale? I assume it was at least considered over the years.

[sougou]

It will be a proxy layer. Since Vitess has proven itself with this approach, I don't see a reason to try anything drastically different. As for Planetscale, I've posted my thoughts on X and LI :).