We're running into issues with canceled queries on a standby server and
have be debating between enabling hot_standby_feedback and setting
max_standby_streaming_delay to something large.
Using max_standby_streaming_delay seems to have the advantage of keeping
the master independent of the standby, but will a long running query mean
that all WAL commits are delayed? Or just those that affected by the long
running query?
Thanks,
Dave