Prompt
What should I use to monitor API traffic and alert on failures?
Latest observation
Oct 5, 2026
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For monitoring API traffic and alerting on failures, a good setup usually includes two layers:
- Metrics + alerting for uptime, latency, error rate, and throughput
- Logging/tracing for debugging individual failures
Good options
Cloud-native choices
- AWS: CloudWatch + X-Ray + SNS alerts
- GCP: Cloud Monitoring + Cloud Logging + Error Reporting
- Azure: Application Insights + Azure Monitor
Popular SaaS/APM tools
- Datadog — very strong for API metrics, dashboards, alerts, and traces
- New Relic — good full-stack observability
- Dynatrace — powerful but can be more complex
- Grafana Cloud — flexible, especially if you already use Prometheus/Loki/Tempo
Open-source / self-hosted
- Prometheus + Alertmanager + Grafana — excellent for alerting on API latency, 5xx rates, request volume, etc.
- ELK/Elastic Stack — better for logs than alerting alone
- OpenTelemetry — standard for instrumentation; pair with Prometheus/Datadog/Grafana/etc.
What to alert on
Common API alerts:
- 5xx error rate above threshold
- Latency p95/p99 above threshold
- Request volume drops unexpectedly
- Auth failures spikes
- Specific endpoint failures
- Timeouts / retries increasing
- SLO burn rate if you use SLOs
Simple recommendation
- If you want the easiest all-in-one solution: Datadog
- If you want open-source and control: Prometheus + Grafana + Alertmanager
- If you’re on a cloud platform already: use the cloud-native monitoring stack
If you tell me your stack (AWS/GCP/Azure, language, Kubernetes or not, budget), I can recommend a specific setup.