Are you using WAL archiving? As far as I understand, pgbackrest and Barman can also use direct streaming from the DB (same mechanism as replication), I didn't find any mention of this in the WAL-G documentation.
With WAL archiving you need to wait for a WAL segment to finish before it's backed up. With streaming backups the deadtime is minimized. At least that's as far as I understand this, I didn't get to try this out in practice yet.
With WAL archiving you need to wait for a WAL segment to finish before it's backed up. With streaming backups the deadtime is minimized. At least that's as far as I understand this, I didn't get to try this out in practice yet.