Four‑fold PgBouncer throughput via multi‑process fleet and SO_REUSEPORT
ClickHouse’s managed PostgreSQL service replaces the single‑threaded PgBouncer with a fleet of processes, each bound to the same port using SO_REUSEPORT. The kernel load‑balances connections, and a peer‑aware layer forwards cancel requests, delivering up to 336 k TPS—about four times the single‑process limit—while fully utilizing a 16‑core server.