{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "graphTooltip": 1,
  "id": null,
  "uid": "goodgo-read-models",
  "title": "GoodGo · Read-Model Observability (RFC-003 Phase 0)",
  "tags": ["goodgo", "rfc-003", "read-models", "observability"],
  "timezone": "browser",
  "schemaVersion": 38,
  "version": 1,
  "refresh": "30s",
  "time": { "from": "now-6h", "to": "now" },
  "templating": {
    "list": [
      { "name": "datasource", "type": "datasource", "query": "prometheus", "current": { "text": "Prometheus", "value": "Prometheus" } },
      { "name": "handler", "type": "query", "datasource": "${datasource}", "query": "label_values(read_model_projector_lag_seconds, handler)", "includeAll": true, "multi": true, "refresh": 2 },
      { "name": "view", "type": "query", "datasource": "${datasource}", "query": "label_values(read_model_refresh_duration_seconds_bucket, view)", "includeAll": true, "multi": true, "refresh": 2 },
      { "name": "model", "type": "query", "datasource": "${datasource}", "query": "label_values(read_model_reconciliation_drift_total, model)", "includeAll": true, "multi": true, "refresh": 2 }
    ]
  },
  "panels": [
    {
      "id": 1, "type": "timeseries", "title": "Projector lag (seconds) — by handler",
      "datasource": "${datasource}", "gridPos": { "h": 8, "w": 12, "x": 0, "y": 0 },
      "fieldConfig": { "defaults": { "unit": "s", "thresholds": { "mode": "absolute", "steps": [{ "color": "green", "value": null }, { "color": "yellow", "value": 30 }, { "color": "red", "value": 120 }] } } },
      "targets": [{ "expr": "read_model_projector_lag_seconds{handler=~\"$handler\"}", "legendFormat": "{{handler}}", "refId": "A" }]
    },
    {
      "id": 2, "type": "stat", "title": "Max projector lag (current)",
      "datasource": "${datasource}", "gridPos": { "h": 8, "w": 12, "x": 12, "y": 0 },
      "fieldConfig": { "defaults": { "unit": "s", "thresholds": { "mode": "absolute", "steps": [{ "color": "green", "value": null }, { "color": "yellow", "value": 30 }, { "color": "red", "value": 120 }] } } },
      "options": { "reduceOptions": { "calcs": ["lastNotNull"] } },
      "targets": [{ "expr": "max(read_model_projector_lag_seconds{handler=~\"$handler\"})", "refId": "A" }]
    },
    {
      "id": 3, "type": "timeseries", "title": "Refresh duration p50/p95 — by view",
      "datasource": "${datasource}", "gridPos": { "h": 8, "w": 12, "x": 0, "y": 8 },
      "fieldConfig": { "defaults": { "unit": "s" } },
      "targets": [
        { "expr": "histogram_quantile(0.95, sum by (view, le) (rate(read_model_refresh_duration_seconds_bucket{view=~\"$view\"}[5m])))", "legendFormat": "p95 · {{view}}", "refId": "A" },
        { "expr": "histogram_quantile(0.50, sum by (view, le) (rate(read_model_refresh_duration_seconds_bucket{view=~\"$view\"}[5m])))", "legendFormat": "p50 · {{view}}", "refId": "B" }
      ]
    },
    {
      "id": 4, "type": "timeseries", "title": "Refresh throughput (refreshes/sec) — by view",
      "datasource": "${datasource}", "gridPos": { "h": 8, "w": 12, "x": 12, "y": 8 },
      "fieldConfig": { "defaults": { "unit": "ops" } },
      "targets": [{ "expr": "sum by (view) (rate(read_model_refresh_duration_seconds_count{view=~\"$view\"}[5m]))", "legendFormat": "{{view}}", "refId": "A" }]
    },
    {
      "id": 5, "type": "timeseries", "title": "Reconciliation drift rate — by model",
      "datasource": "${datasource}", "gridPos": { "h": 8, "w": 12, "x": 0, "y": 16 },
      "fieldConfig": { "defaults": { "unit": "ops" } },
      "targets": [{ "expr": "sum by (model) (rate(read_model_reconciliation_drift_total{model=~\"$model\"}[15m]))", "legendFormat": "{{model}}", "refId": "A" }]
    },
    {
      "id": 6, "type": "stat", "title": "Total drift events (last 24h)",
      "datasource": "${datasource}", "gridPos": { "h": 8, "w": 12, "x": 12, "y": 16 },
      "fieldConfig": { "defaults": { "unit": "short", "thresholds": { "mode": "absolute", "steps": [{ "color": "green", "value": null }, { "color": "yellow", "value": 1 }, { "color": "red", "value": 10 }] } } },
      "options": { "reduceOptions": { "calcs": ["lastNotNull"] } },
      "targets": [{ "expr": "sum by (model) (increase(read_model_reconciliation_drift_total{model=~\"$model\"}[24h]))", "legendFormat": "{{model}}", "refId": "A" }]
    }
  ]
}