{
  "title": "Service Health — Four Golden Signals",
  "panels": [
    {
      "title": "Latency — p50, p95, p99",
      "type": "timeseries",
      "targets": [
        {
          "expr": "histogram_quantile(0.50, sum(rate(http_request_duration_seconds_bucket{job='$service'}[$__rate_interval])) by (le))",
          "legendFormat": "p50"
        },
        {
          "expr": "histogram_quantile(0.95, sum(rate(http_request_duration_seconds_bucket{job='$service'}[$__rate_interval])) by (le))",
          "legendFormat": "p95"
        },
        {
          "expr": "histogram_quantile(0.99, sum(rate(http_request_duration_seconds_bucket{job='$service'}[$__rate_interval])) by (le))",
          "legendFormat": "p99"
        }
      ]
    },
    {
      "title": "Traffic — Requests per Second",
      "type": "timeseries",
      "targets": [{
        "expr": "sum(rate(http_requests_total{job='$service'}[$__rate_interval])) by (endpoint)",
        "legendFormat": "{{ endpoint }}"
      }]
    },
    {
      "title": "Errors — Error Rate %",
      "type": "timeseries",
      "targets": [{
        "expr": "sum(rate(http_requests_total{job='$service', status=~'5..'}[$__rate_interval])) / sum(rate(http_requests_total{job='$service'}[$__rate_interval])) * 100",
        "legendFormat": "Error Rate %"
      }]
    },
    {
      "title": "Saturation — CPU + Memory",
      "type": "timeseries",
      "targets": [
        {
          "expr": "process_cpu_seconds_total{job='$service'}",
          "legendFormat": "CPU"
        },
        {
          "expr": "process_resident_memory_bytes{job='$service'}",
          "legendFormat": "Memory"
        }
      ]
    }
  ]
}
Monitoring — Prometheus, Grafana, Datadog

Monitoring — Prometheus, Grafana, Datadog

Monitoring — Prometheus, Grafana, Datadog
