On Thu, Jul 4, 2019 at 5:17 AM Michael Paquier <mich...@paquier.xyz> wrote: > > On Tue, Jul 02, 2019 at 11:31:49AM -0300, Fabrízio de Royes Mello wrote: > > New version attached. > > This looks in pretty good shape to me, and no objections from me to > get those functions as the min() flavor is useful for monitoring WAL > retention for complex deployments. > > Do you have a particular use-case in mind for max() one? I can think > of at least one case: monitoring the flush LSNs of a set of standbys > to find out how much has been replayed at most. >
I use min/max to measure the amount of generated WAL (diff) during some periods based on wal position stored in some monitoring system. Regards, -- Fabrízio de Royes Mello Timbira - http://www.timbira.com.br/ PostgreSQL: Consultoria, Desenvolvimento, Suporte 24x7 e Treinamento
