metrics: add an example Grafana dashboard (#4559)

* metrics: add an example Grafana dashboard * metrics: rename Handshake Duration to Handshake Latency Co-authored-by: sukun <[email protected]> --------- Co-authored-by: sukun <[email protected]>
quic-go · Jun 6, 2024 · 4d0562d · 4d0562d
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diff --git a/metrics/dashboards/README.md b/metrics/dashboards/README.md
@@ -1,33 +1,24 @@
-# quic-go Prometheus / Grafana setup
+# quic-go Prometheus / Grafana Local Development Setup
 
-Expose a Grafana endpoint on `http:https://localhost:5001/prometheus`:
+For local development and debugging, it can be useful to spin up a local Prometheus and Grafana instance.
+
+Please refer to the [documentation](https://quic-go.net/docs/quic/metrics/) for how to configure quic-go to expose Prometheus metrics.
+
+The configuration files in this directory assume that the application exposes the Prometheus endpoint at `http:https://localhost:5001/prometheus`:
 ```go
 import "github.com/prometheus/client_golang/prometheus/promhttp"
 
 go func() {
  http.Handle("/prometheus", promhttp.Handler())
- log.Fatal(http.ListenAndServe(":5001", nil))
+ log.Fatal(http.ListenAndServe("localhost:5001", nil))
 }()
 ```
 
-Set a metrics tracer on the `Transport`:
-```go
-quic.Transport{
- Tracer: metrics.NewTracer(),
-}
-```
-
-When using multiple `Transport`s, it is recommended to use the metrics tracer struct for all of them.
-
-
-Set a metrics connection tracer on the `Config`:
-```go
-quic.Config{
- Tracer: metrics.DefaultConnectionTracer,
-}
-```
+Prometheus and Grafana can be started using Docker Compose:
 
 Running:
 ```shell
-docker-compose up
+docker compose up
 ```
+
+[quic-go.json](./quic-go.json) contains the JSON model of an example Grafana dashboard.