what's the promised value for PostgreSQL replication lag?

Check the number of WAL files retained and spilled files for each replication slots Perfdata returns the number of WAL kept for each slot and

You can use CloudWatch metrics, Oldest Replication Slot Lag, and Transaction Logs Disk Usage to determine how far behind the most lagging replica is You can

oldest slot machine Each read replica has its own physical slot on the source DB instance The slot keeps track of the oldest WAL that might be

nb789 slot Oldest replication slot lag, Measures the size of the replica lagging the Replica lag, Measures the amount of time a Read Replica DB instance lags