{
  "title": "Load Test - Postgres Health",
  "panels": [
    {
      "title": "Active Connections",
      "type": "graph",
      "targets": [
        { "expr": "pg_stat_activity_count" }
      ]
    },
    {
      "title": "Cache Hit Ratio",
      "type": "graph",
      "targets": [
        { "expr": "rate(pg_stat_database_blks_hit[5m]) / (rate(pg_stat_database_blks_hit[5m]) + rate(pg_stat_database_blks_read[5m]))" }
      ]
    },
    {
      "title": "Longest Transaction",
      "type": "graph",
      "targets": [
        { "expr": "pg_stat_activity_max_tx_duration" }
      ]
    }
  ]
}