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Add replication-latency description #39

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Add replication-latency description
kriszyp Dec 5, 2025
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kriszyp Dec 5, 2025
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3 changes: 2 additions & 1 deletion README.md
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Expand Up @@ -204,7 +204,8 @@ Metrics specific to Harper (all metrics are [Gauges](https://prometheus.io/docs/
| `cluster_connected_dbs` | Count of connected dbs by node. |
| `cluster_disconnected_dbs` | Count of disconnected dbs by node. |
| `replication_backlog` | Number of pending replication consumers by origin, database, & table (for NATS replication only). |
| `replication_backlog_time` | The difference in milliseconds between lastReceivedRemoteTime and lastReceivedLocalTime for each of the node's dbs (for Harper replication only). |
| `replication_backlog_time` | The difference in milliseconds between lastReceivedRemoteTime and lastReceivedLocalTime for each of the node's dbs (for Harper replication only). |
| `replication_latency` | The difference in milliseconds between incoming transactions' timestamps (as recorded remotely) and the time when each transaction finished committing locally (for Harper replication only). |

A complete sample response of `/metrics`:
```text
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