wu-sheng commented on code in PR #543:
URL:
https://github.com/apache/skywalking-banyandb/pull/543#discussion_r1772701096
##########
docs/operation/observability.md:
##########
@@ -24,6 +24,238 @@ When query tracing is enabled, the slow query log won't be
generated.
## Metrics
+BanyanDB expose metrics for monitoring and analysis. In this part, we use some
variables to represent the metrics, such as `$job` and `$instance`. The `$job`
is the job name of the BanyanDB collection job, and the `$instance` is the
instance name of the BanyanDB instance.
+
+`__rate_interval` is a variable that represents the rate interval. It is used
to calculate the rate of metrics.
+
+### Stats
+
+`Stats` metrics are used to monitor the overall status of BanyanDB. The
following metrics are available:
+
+#### Write Rate
+
+The write rate is the number of write operations per second. It is calculated
by summing the total number of written operations for measures and streams.
+
+**Expression**: `sum(rate(banyandb_measure_total_written{job=~\"$job\",
instance=~\"$instance\"}[$__rate_interval])) +
sum(rate(banyandb_stream_tst_total_written{job=~\"$job\",
instance=~\"$instance\"}[$__rate_interval]))`
Review Comment:
As you have been using PromQL, would you post the Grafana Dashboard
configurations in the doc?
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