This is something I'm very interested in. Very helpful for fixing mistakes you didn't realize in time.
One question, would it be possible to allow this to be able to be configured on a hot standby and not the master?
That would be very helpful by being able to keep some arbitrary length of extra data on a replica which does not have to be kept on the primary server, thus not impacting performance.
Just a thought I had and was not sure if it was even feasible.
Happy to see work happening on this though.
-Adam
