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      "type": "timeseries",
      "title": "Active Connections",
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      "id": 3,
      "type": "timeseries",
      "title": "Cache Hit Ratio",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 4 },
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      "fieldConfig": { "defaults": { "unit": "percentunit", "min": 0, "max": 1, "color": { "mode": "palette-classic" }, "custom": { "fillOpacity": 20, "lineWidth": 1, "drawStyle": "line", "showPoints": "never" } }, "overrides": [] },
      "targets": [ { "refId": "A", "expr": "sum(rate(pg_stat_database_blks_hit{instance=\"$instance\"}[$__rate_interval])) / (sum(rate(pg_stat_database_blks_hit{instance=\"$instance\"}[$__rate_interval])) + sum(rate(pg_stat_database_blks_read{instance=\"$instance\"}[$__rate_interval])))", "legendFormat": "hit ratio" } ]
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      "title": "Transactions",
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      "datasource": { "type": "prometheus", "uid": "prometheus" },
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      "targets": [
        { "refId": "A", "expr": "rate(pg_stat_database_xact_commit{instance=\"$instance\"}[$__rate_interval])", "legendFormat": "commit" },
        { "refId": "B", "expr": "rate(pg_stat_database_xact_rollback{instance=\"$instance\"}[$__rate_interval])", "legendFormat": "rollback" }
      ]
    },
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      "id": 5,
      "type": "timeseries",
      "title": "Deadlocks",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 12 },
      "datasource": { "type": "prometheus", "uid": "prometheus" },
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}