On Thu, 24 Sep 2020 17:08:44 +1200 David Rowley <dgrowle...@gmail.com> wrote: [...] > I wondered if there was much in the way of use-cases like a traffic > filter, or statement replication. I wasn't sure if it was a solution > looking for a problem or not, but it seems like it could be productive > to talk about possibilities here and make a judgement call based on if > any alternatives exist today that will allow that problem to be solved > sufficiently in another way.
If I understand correctly the proposal, this might enable traffic capture using a loadable extension. This kind of usage would allows to replay and validate any kind of traffic from a major version to another one. Eg. to look for regressions from the application point of view, before a major upgrade. I did such regression tests in past. We were capturing production traffic using libpcap and replay it using pgshark on upgraded test env. Very handy. However: * libpcap can drop network packet during high load. This make the capture painful to recover past the hole. * useless with encrypted traffic So, +1 for such hooks. Regards,
