Metrics

The metrics endpoint provides information about the browser pool, such as the spare resource capacity, pool size, available and borrowed instances, pending requests, and the maximum and minimum pool size.

You can enable metrics by setting METRICS=true. This will expose a /metrics endpoint for Prometheus to scrape.

{
  "poolMetrics": {
    "spareResourceCapacity": 8,
    "size": 2,
    "available": 2,
    "borrowed": 0,
    "pending": 0,
    "max": 10,
    "min": 2
  }
}