Demo graph for https://github.com/andrew-d/mastodon_exporter

grafana-graph.json

{
  "datasource": {
    "type": "prometheus",
    "uid": "l-jz8T47k"
  },
  "description": "",
  "fieldConfig": {
    "defaults": {
      "color": {
        "mode": "thresholds"
      },
      "mappings": [],
      "thresholds": {
        "mode": "absolute",
        "steps": [
          {
            "color": "green",
            "value": null
          }
        ]
      },
      "unit": "none"
    },
    "overrides": []
  },
  "gridPos": {
    "h": 9,
    "w": 12,
    "x": 0,
    "y": 8
  },
  "id": 2,
  "options": {
    "displayMode": "gradient",
    "minVizHeight": 10,
    "minVizWidth": 0,
    "orientation": "auto",
    "reduceOptions": {
      "calcs": [
        "lastNotNull"
      ],
      "fields": "",
      "values": false
    },
    "showUnfilled": true
  },
  "pluginVersion": "8.5.14",
  "targets": [
    {
      "datasource": {
        "type": "prometheus",
        "uid": "l-jz8T47k"
      },
      "editorMode": "code",
      "expr": "mastodon_resolved_reports_histogram_bucket",
      "format": "heatmap",
      "legendFormat": "{{le}}",
      "range": true,
      "refId": "A"
    }
  ],
  "title": "Report Resolution Time",
  "transformations": [
    {
      "id": "organize",
      "options": {
        "excludeByName": {},
        "indexByName": {},
        "renameByName": {
          "60": "1m",
          "600": "10m",
          "1800": "30m",
          "3600": "1h",
          "14400": "4h",
          "28800": "8h",
          "86400": "1d",
          "+Inf": "Longer",
          "Time": ""
        }
      }
    }
  ],
  "type": "bargauge"
}