{
  "schema_version": 1,
  "chart_type": "cartesian",
  "orientation": "horizontal",
  "meta": {
    "title": "Most services grew while a smaller group released memory",
    "subtitle": "Five-minute memory footprint versus the previous hour",
    "quality_profile": "showcase",
    "width": 1120,
    "height": 780
  },
  "data": {
    "columns": [
      {
        "id": "service",
        "type": "string",
        "label": "Service",
        "values": ["spanner", "analytics-intake", "trade-scheduler", "trade-receiver", "kafka", "emailer", "product-recommendation-db", "fraud-detector", "analytics-aggregator", "product-recommendation", "product-recommendation-lite", "balance-checker", "trade-executor", "authenticator", "trade-validator", "trade-enrichment", "notifier", "slow-kafka"]
      },
      {
        "id": "current_memory",
        "type": "number",
        "unit": "MiB",
        "label": "Current memory",
        "values": [141.2, 292.3, 337.7, 75.6, 806, 856.7, 888.6, 1740.8, 375.5, 103.6, 79.7, 1638.4, 973.6, 525.6, 57.3, 51.5, 575.1, 266.2]
      },
      {
        "id": "change",
        "type": "number",
        "unit": "%",
        "label": "Change",
        "values": [35, 28.8, 17.4, 16.7, 13, 7.9, 4.5, 3.4, 1.7, 1.4, 0.8, 0, -2.4, -3, -3.6, -6.1, -18.9, -40.3]
      },
      {
        "id": "previous_memory",
        "type": "number",
        "unit": "MiB",
        "label": "Previous-hour memory",
        "values": [104.6, 226.9, 287.6, 64.8, 713.3, 793.9, 850.3, 1683.6, 369.2, 102.2, 79.1, 1638.4, 997.5, 541.9, 59.4, 54.8, 709.1, 445.9]
      }
    ]
  },
  "encoding": {
    "x": {
      "column": "service",
      "scale": "band",
      "label": "Service",
      "context": {
        "column": "current_memory",
        "label": "Current memory"
      }
    },
    "y": {
      "scale": "linear",
      "zero": true,
      "label": "Memory change"
    }
  },
  "series": [
    {
      "id": "memory_change",
      "mark": "bar",
      "y": "change",
      "label": "Change",
      "color_by": "sign",
      "value_labels": "auto",
      "details": [
        {
          "column": "previous_memory",
          "label": "Previous-hour memory"
        }
      ]
    }
  ],
  "cards": [
    {
      "title": "Takeaway",
      "items": [
        "Spanner has the largest increase at +35%.",
        "Slow-kafka has the largest decrease at -40.3%.",
        "Balance-checker is unchanged."
      ]
    }
  ]
}