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Replication

Monitor xCluster replication

xCluster

YugabyteDB allows you to asynchronously replicate data between independent YugabyteDB clusters.

The replication lag metrics are computed at a tablet level as the difference between Hybrid Logical Clock (HLC) time on the source's tablet server, and the hybrid clock timestamp of the latest record pulled from the source.

The following table describes key replication metrics. All metrics are counters and units are microseconds.

Metric (Counter | microseconds) Description
async_replication_committed_lag_micros The time in microseconds for the replication lag on the target cluster. This metric is available only on the source cluster.
time_since_last_getchanges The time elapsed in microseconds from when the source cluster got a request to replicate from the target cluster. This metric is available only on the source cluster.
consumer_safe_time_lag The time elapsed in milliseconds between the physical time and safe time. Safe time is when data has been replicated to all the tablets on the consumer cluster. This metric is available only on the target cluster.
consumer_safe_time_skew The time elapsed in milliseconds for replication between the first and the last tablet replica on the consumer cluster. This metric is available only on the target cluster.