On 19 November 2016 at 01:29, Robert Haas <robertmh...@gmail.com> wrote:
>> We can and probably should have both. >> >> If the server tells us on connect whether it's a standby or not, use that. >> >> Otherwise, ask it. >> >> That way we don't pay the round-trip cost and get the log spam when >> talking to newer servers that send us something useful in the startup >> packet, but we can still query it on older servers. Graceful fallback. >> >> Every round trip is potentially very expensive. Having libpq do them >> unnecessarily is bad. > > True, but raising the bar for this feature so that it doesn't get done > is also bad. It can be improved in a later patch. Good point. Starting with the followup query method seems fine. -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
