Bruce Momjian <br...@momjian.us> writes: > Doesn't the system already adjust the delay based on the length of slave > transactions, e.g. max_standby_delay. It seems there is no need for a > user switch --- just max_standby_delay really high.
Well that GUC looks like it allows to set a compromise between HA and reporting, not to say "do not ever give the priority to the replay while I'm running my reports". At least that's how I understand it. The feedback loop might get expensive on master server when running reporting queries on the slave, unless you can "pause" it explicitly I think. I don't see how the system will guess that you're running a reporting server rather than a HA node, and max_standby_delay is just a way to tell the standby to please be nice in case of abuse. Regards, -- dim -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
