[sougou]

The Vitess architecture was traditionally built in a database agnostic fashion. Most of its features should port smoothly over to Postgres.

The cool features that I can think of: A formal sharding scheme based on relational foundations, a fairly advanced query analyzer and routing engine capable of cross-shard functionality, HA and durability, abilities to reshard safely, seamless migrations, etc.

It's a pretty big list of capabilities.