Get investigation results

{
  "incidentId": "inc_01HX9VTPQR3KF8MZWBYD5N6JCE",
  "rootCause": "Unindexed query on the orders table introduced in deploy d9f3a21. The query performs a full table scan for every checkout request, causing latency to spike from 45ms to over 4800ms under normal load.",
  "confidence": 0.94,
  "evidence": [
    {
      "agentRole": "database-specialist",
      "content": "Analyzed slow query log. Query `SELECT * FROM orders WHERE tenant_id = ?` lacks a covering index on (tenant_id, created_at). Query plan shows Seq Scan on orders (rows=1847293). Index creation will reduce this to an Index Scan with estimated cost reduction of 99.7%."
    },
    {
      "agentRole": "deployment-tracker",
      "content": "Deploy d9f3a21 (2024-04-01 14:25 UTC) modified the OrderRepository query builder, removing the `.withIndex('tenant_created_idx')` hint. This corresponds exactly to the latency spike onset at 14:27 UTC."
    },
    {
      "agentRole": "performance-analyzer",
      "content": "P99 latency increased from 45ms to 4823ms at 14:27 UTC. CPU utilization on prod-db-01 reached 94% at peak. Pattern is consistent with a missing index causing sequential scans under load."
    }
  ],
  "recommendedActions": [
    "Add composite index: `CREATE INDEX CONCURRENTLY idx_orders_tenant_created ON orders (tenant_id, created_at DESC);`",
    "Roll back deploy d9f3a21 if the index migration cannot be applied within the current SLA window.",
    "Add query performance monitoring alert for queries exceeding 500ms on the orders table."
  ]
}