DnsMetricKey: typeof DNS_TOTAL_REQUESTS | typeof DNS_FAILURES | typeof DNS_SUCCESSFUL_RESPONSES | typeof DNS_FAILED_RESPONSES | typeof DNS_TIMEOUTS | typeof DNS_RESPONSES_NXDOMAIN | typeof DNS_RESPONSES_SERVFAIL | typeof DNS_RESPONSES_OTHER | typeof DNS_SUCCESS_LATENCY_PERCENTILE | typeof DNS_FAILURE_LATENCY_PERCENTILE | UnparsedObject
The metric key for DNS metrics.