Monitoring your Amazon Neptune global database using CloudWatch metrics

GlobalDbDataTransferBytes   –   The number of bytes of redo log data transferred from the primary AWS Region to a secondary AWS Region in a Neptune global database.

GlobalDbReplicatedWriteIO   –   The number of write I/O operations replicated from the primary AWS Region in the global database to the cluster volume in a secondary AWS Region.

The billing calculations for each DB cluster in a Neptune global database use the VolumeWriteIOPS metric to account for writes performed within that cluster. For the primary DB cluster, the billing calculations use NeptuneGlobalDbReplicatedWriteIO to account for the cross-region replication to secondary DB clusters.

GlobalDbProgressLag   –   The number of milliseconds that a secondary cluster is behind the primary cluster for both user transactions and system transactions.