{
  "kind": "append",
  "runId": "baseline-append",
  "results": {
    "totalEvents": 600000,
    "batches": 10000,
    "errors": 0,
    "latencyMs": {
      "p50": 3.4,
      "p95": 9.1
    },
    "throughputEventsPerSec": 10000.0
  }
}