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        "y": 0
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            "uid": "prometheus"
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        "uid": "prometheus"
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                "color": "green",
                "value": null
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                "color": "orange",
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            "uid": "prometheus"
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            "axisLabel": "",
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            "stacking": {
              "mode": "normal",
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            "mode": "palette-classic"
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          "displayMode": "table",
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      "id": 8,
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      "title": "Request latency",
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        "type": "prometheus",
        "uid": "prometheus"
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        "x": 12,
        "y": 7
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            "type": "prometheus",
            "uid": "prometheus"
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        "type": "prometheus",
        "uid": "prometheus"
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      "description": "Application egress, useful to spot missing pagination or an over-eager serializer."
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        "uid": "prometheus"
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        "uid": "prometheus"
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          "expr": "histogram_quantile(0.99, sum by (le) (rate(django_db_query_duration_seconds_bucket{namespace=\"classic-models\"}[$__rate_interval])))",
          "legendFormat": "p99"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "s",
          "custom": {
            "drawStyle": "line",
            "lineWidth": 2,
            "fillOpacity": 0,
            "showPoints": "never",
            "pointSize": 8,
            "gradientMode": "none",
            "spanNulls": false,
            "axisLabel": "",
            "axisPlacement": "auto",
            "lineInterpolation": "smooth"
          },
          "mappings": [],
          "color": {
            "mode": "palette-classic"
          },
          "min": 0
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "p50"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "light-blue"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "p95"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "blue"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "p99"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "dark-blue"
                }
              }
            ]
          }
        ]
      },
      "options": {
        "legend": {
          "showLegend": true,
          "displayMode": "table",
          "placement": "bottom",
          "calcs": [
            "mean",
            "max"
          ]
        },
        "tooltip": {
          "mode": "multi",
          "sort": "desc"
        }
      }
    },
    {
      "id": 16,
      "type": "timeseries",
      "title": "New DB connections",
      "datasource": {
        "type": "prometheus",
        "uid": "prometheus"
      },
      "gridPos": {
        "h": 7,
        "w": 8,
        "x": 16,
        "y": 31
      },
      "targets": [
        {
          "refId": "A",
          "datasource": {
            "type": "prometheus",
            "uid": "prometheus"
          },
          "expr": "sum(rate(django_db_new_connections_total{namespace=\"classic-models\"}[$__rate_interval]))",
          "legendFormat": "connections/s"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "reqps",
          "custom": {
            "drawStyle": "line",
            "lineWidth": 2,
            "fillOpacity": 8,
            "showPoints": "never",
            "pointSize": 8,
            "gradientMode": "none",
            "spanNulls": false,
            "axisLabel": "",
            "axisPlacement": "auto",
            "lineInterpolation": "smooth"
          },
          "mappings": [],
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            "mode": "palette-classic"
          },
          "min": 0
        },
        "overrides": []
      },
      "options": {
        "legend": {
          "showLegend": false,
          "displayMode": "table",
          "placement": "bottom",
          "calcs": [
            "mean",
            "max"
          ]
        },
        "tooltip": {
          "mode": "multi",
          "sort": "desc"
        }
      },
      "description": "Django opens one connection per request while CONN_MAX_AGE stays at 0. A rate close to the HTTP throughput confirms there is no connection reuse."
    },
    {
      "id": 17,
      "type": "row",
      "title": "Logs",
      "collapsed": false,
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 38
      },
      "panels": []
    },
    {
      "id": 18,
      "type": "timeseries",
      "title": "Log volume by level",
      "datasource": {
        "type": "loki",
        "uid": "loki"
      },
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 0,
        "y": 39
      },
      "targets": [
        {
          "refId": "A",
          "datasource": {
            "type": "loki",
            "uid": "loki"
          },
          "expr": "sum by (detected_level) (count_over_time({namespace=\"classic-models\",container=\"classic-models-api\"}[$__auto]))",
          "legendFormat": "{{detected_level}}",
          "queryType": "range"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "short",
          "min": 0,
          "mappings": [],
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "drawStyle": "bars",
            "lineWidth": 1,
            "fillOpacity": 80,
            "showPoints": "never",
            "barAlignment": 0,
            "stacking": {
              "mode": "normal",
              "group": "A"
            },
            "axisLabel": "",
            "axisPlacement": "auto"
          }
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "critical"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "dark-red"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "error"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "red"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "warn"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "orange"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "info"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "green"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "debug"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "blue"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "unknown"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "mode": "fixed",
                  "fixedColor": "text"
                }
              }
            ]
          }
        ]
      },
      "options": {
        "legend": {
          "showLegend": true,
          "displayMode": "table",
          "placement": "bottom",
          "calcs": [
            "sum"
          ]
        },
        "tooltip": {
          "mode": "multi",
          "sort": "desc"
        }
      },
      "description": "`detected_level` is inferred by Loki at ingestion, so one query works across every log format."
    },
    {
      "id": 19,
      "type": "timeseries",
      "title": "Errors by container (whole namespace)",
      "datasource": {
        "type": "loki",
        "uid": "loki"
      },
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 12,
        "y": 39
      },
      "targets": [
        {
          "refId": "A",
          "datasource": {
            "type": "loki",
            "uid": "loki"
          },
          "expr": "sum by (container) (count_over_time({namespace=\"classic-models\"} | detected_level =~ \"error|critical\" [$__auto]))",
          "legendFormat": "{{container}}",
          "queryType": "range"
        }
      ],
      "fieldConfig": {
        "defaults": {
          "unit": "short",
          "min": 0,
          "mappings": [],
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "drawStyle": "bars",
            "lineWidth": 1,
            "fillOpacity": 80,
            "showPoints": "never",
            "barAlignment": 0,
            "stacking": {
              "mode": "normal",
              "group": "A"
            },
            "axisLabel": "",
            "axisPlacement": "auto"
          }
        },
        "overrides": []
      },
      "options": {
        "legend": {
          "showLegend": true,
          "displayMode": "table",
          "placement": "bottom",
          "calcs": [
            "sum"
          ]
        },
        "tooltip": {
          "mode": "multi",
          "sort": "desc"
        }
      },
      "description": "Namespace-wide so the datastore's failures show up next to the application's."
    },
    {
      "id": 20,
      "type": "logs",
      "title": "Recent errors and warnings",
      "datasource": {
        "type": "loki",
        "uid": "loki"
      },
      "gridPos": {
        "h": 11,
        "w": 24,
        "x": 0,
        "y": 47
      },
      "targets": [
        {
          "refId": "A",
          "datasource": {
            "type": "loki",
            "uid": "loki"
          },
          "expr": "{namespace=\"classic-models\"} | detected_level =~ \"error|critical|warn\"",
          "queryType": "range"
        }
      ],
      "options": {
        "showTime": true,
        "showLabels": false,
        "showCommonLabels": false,
        "wrapLogMessage": true,
        "prettifyLogMessage": false,
        "sortOrder": "Descending",
        "dedupStrategy": "none",
        "enableLogDetails": true
      },
      "description": "Click a line to expand it. Where the line carries a trace_id, the Loki datasource's derived field opens the matching trace in Tempo."
    },
    {
      "id": 21,
      "type": "row",
      "title": "Container resources",
      "collapsed": false,
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 58
      },
      "panels": []
    },
    {
      "id": 22,
      "type": "timeseries",
      "title": "CPU per container",
      "datasource": {
        "type": "prometheus",
        "uid": "prometheus"
      },
      "gridPos": {
        "h": 7,
        "w": 8,
        "x": 0,
        "y": 59
      },
      "targets": [
        {
          "refId": "A",
          "datasource": {
            "type": "prometheus",
            "uid": "prometheus"
          },
          "expr": "sum by (pod, container) (rate(container_cpu_usage_seconds_total{namespace=\"classic-models\",pod=~\"classic-models-api-.*\",container!=\"\"}[$__rate_interval]))",
          "legendFormat": "{{pod}}/{{container}}"
        }
      ],
      "fieldConfig": {
        "defaults": {
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          "custom": {
            "drawStyle": "line",
            "lineWidth": 2,
            "fillOpacity": 8,
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            "pointSize": 8,
            "gradientMode": "none",
            "spanNulls": false,
            "axisLabel": "",
            "axisPlacement": "auto",
            "lineInterpolation": "smooth"
          },
          "mappings": [],
          "color": {
            "mode": "palette-classic"
          },
          "min": 0,
          "decimals": 3
        },
        "overrides": []
      },
      "options": {
        "legend": {
          "showLegend": true,
          "displayMode": "table",
          "placement": "bottom",
          "calcs": [
            "mean",
            "max"
          ]
        },
        "tooltip": {
          "mode": "multi",
          "sort": "desc"
        }
      },
      "description": "Cores consumed."
    },
    {
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      "title": "Memory per container",
      "datasource": {
        "type": "prometheus",
        "uid": "prometheus"
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      "gridPos": {
        "h": 7,
        "w": 8,
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      "targets": [
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          "refId": "A",
          "datasource": {
            "type": "prometheus",
            "uid": "prometheus"
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          "expr": "sum by (pod, container) (container_memory_working_set_bytes{namespace=\"classic-models\",pod=~\"classic-models-api-.*\",container!=\"\"})",
          "legendFormat": "{{pod}}/{{container}}"
        }
      ],
      "fieldConfig": {
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        "overrides": []
      },
      "options": {
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          "displayMode": "table",
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            "mean",
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          ]
        },
        "tooltip": {
          "mode": "multi",
          "sort": "desc"
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      },
      "description": "Working set: what the kernel cannot reclaim under pressure. This is the figure the OOM killer compares against the limit."
    },
    {
      "id": 24,
      "type": "timeseries",
      "title": "Restarts over the window",
      "datasource": {
        "type": "prometheus",
        "uid": "prometheus"
      },
      "gridPos": {
        "h": 7,
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      "targets": [
        {
          "refId": "A",
          "datasource": {
            "type": "prometheus",
            "uid": "prometheus"
          },
          "expr": "sum by (pod) (changes(container_start_time_seconds{namespace=\"classic-models\",pod=~\"classic-models-api-.*\",container!=\"\"}[$__range]))",
          "legendFormat": "{{pod}}"
        }
      ],
      "fieldConfig": {
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            "axisPlacement": "auto",
            "lineInterpolation": "smooth"
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          "mappings": [],
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          },
          "min": 0,
          "decimals": 0
        },
        "overrides": []
      },
      "options": {
        "legend": {
          "showLegend": true,
          "displayMode": "table",
          "placement": "bottom",
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            "mean",
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          ]
        },
        "tooltip": {
          "mode": "multi",
          "sort": "desc"
        }
      },
      "description": "Container start count over the displayed window. Stays at 0 in nominal operation."
    }
  ]
}