{
  "name": "Database & cache",
  "description": "Postgres statement latency and Redis memory pressure",
  "default_earliest": "-24h",
  "default_latest": "now",
  "panels": [
    {
      "title": "Slow queries (>1s)",
      "query": "service=postgres | where duration_ms>1000 | stats count",
      "viz_type": "single_stat",
      "position_x": 0,
      "position_y": 0,
      "width": 4,
      "height": 3,
      "query_language": "spl",
      "sort_order": 0
    },
    {
      "title": "Avg statement (ms)",
      "query": "cairnobs.metrics!=true cairnobs.heartbeat!=true service=postgres | stats avg(duration_ms) as avg_duration_ms",
      "viz_type": "single_stat",
      "position_x": 4,
      "position_y": 0,
      "width": 4,
      "height": 3,
      "query_language": "spl",
      "sort_order": 1
    },
    {
      "title": "Redis evictions",
      "query": "service=redis op=evict | stats count",
      "viz_type": "single_stat",
      "position_x": 8,
      "position_y": 0,
      "width": 4,
      "height": 3,
      "query_language": "spl",
      "sort_order": 2
    },
    {
      "title": "Statements by kind",
      "query": "cairnobs.metrics!=true cairnobs.heartbeat!=true service=postgres | stats count by query_kind | sort -count",
      "viz_type": "bar",
      "position_x": 0,
      "position_y": 3,
      "width": 6,
      "height": 5,
      "viz_config": {
        "x_column": "query_kind",
        "value_column": "count"
      },
      "query_language": "spl",
      "sort_order": 3
    },
    {
      "title": "Slowest tables (avg ms)",
      "query": "service=postgres | stats avg(duration_ms) as avg_duration_ms by table | sort -avg_duration_ms | head 10",
      "viz_type": "top_n",
      "position_x": 6,
      "position_y": 3,
      "width": 6,
      "height": 5,
      "viz_config": {
        "label_column": "table",
        "value_column": "avg_duration_ms"
      },
      "query_language": "spl",
      "sort_order": 4
    },
    {
      "title": "Statement kind by table",
      "query": "cairnobs.metrics!=true cairnobs.heartbeat!=true service=postgres | stats count by table, query_kind",
      "viz_type": "heatmap",
      "position_x": 0,
      "position_y": 8,
      "width": 6,
      "height": 5,
      "viz_config": {
        "x_column": "table",
        "y_column": "query_kind",
        "value_column": "count"
      },
      "query_language": "spl",
      "sort_order": 5
    },
    {
      "title": "Redis events by operation",
      "query": "cairnobs.metrics!=true cairnobs.heartbeat!=true service=redis | stats count by op | sort -count",
      "viz_type": "bar",
      "position_x": 6,
      "position_y": 8,
      "width": 6,
      "height": 5,
      "viz_config": {
        "x_column": "op",
        "value_column": "count"
      },
      "query_language": "spl",
      "sort_order": 6
    },
    {
      "title": "Slowest statements",
      "query": "service=postgres | where duration_ms>1000 | sort -duration_ms | head 50 | fields timestamp, table, query_kind, duration_ms, message",
      "viz_type": "table",
      "position_x": 0,
      "position_y": 13,
      "width": 12,
      "height": 6,
      "query_language": "spl",
      "sort_order": 7
    }
  ]
}