Similarly, tcp level keepalive not necessarily sufficient, if there's intermediate "pgwire" protocol level connection poolers like pgbouncer. Nor do they prote

Similarly, tcp level keepalive not necessarily sufficient, if there's intermediate "pgwire" protocol level connection poolers like pgbouncer. Nor do they protect against applications that are effectively hung somewhere. So I do think "pgwrite" level pings make some sense, it's just not exactly straightforward to add them :/