Clickhouse also just put out a fun article on scaling pgbouncer too, talking about scaling out so_reuseport while not having to shard so harshly (a major limitation pgdog here is addressing via rewrite), https://clickhouse.com/blog/pgbouncer-clickhouse-managed-pos... https://news.ycombinator.com/item?id=48814152
Well tbf pgdog looks extremely amazing on paper and goes way beyond multi threading.
The notify/listen fix and automatic query routing to read replicas and auto sharding might bringt Postgres finally closer to vitess