Lab — Add full observability to a FastAPI service#

Objective#

Instrument a FastAPI application to export metrics and traces, and build a Grafana dashboard to monitor it.

Requirements#

1. Instrument an existing FastAPI app using the OpenTelemetry Python SDK.
2. Export metrics (request count, latency) to Prometheus.
3. Export traces to Jaeger or a similar tracing backend.
4. Run FastAPI, Prometheus, and Grafana locally using Docker Compose.
5. Create a Grafana dashboard visualizing API request rates and P99 latency.

Deliverables#

• The docker-compose.yml file.
• A screenshot of your Grafana dashboard under load (use a tool like ab or locust to generate traffic).