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# Example Queries
PromQL and curl examples for Epimetheus test metrics. Use your Prometheus (or Prometheus-compatible) query URL; after port-forward, that is often http://localhost:9090.
## Basic PromQL
```promql
# Total requests
epimetheus_test_requests_total
# Request rate (last 5 minutes)
rate(epimetheus_test_requests_total[5m])
# Active connections
epimetheus_test_active_connections
# Temperature
epimetheus_test_temperature_celsius
```
## Histogram
```promql
# 95th percentile request duration
histogram_quantile(0.95, rate(epimetheus_test_request_duration_seconds_bucket[5m]))
# Median (50th percentile)
histogram_quantile(0.50, rate(epimetheus_test_request_duration_seconds_bucket[5m]))
# Average request duration
rate(epimetheus_test_request_duration_seconds_sum[5m]) /
rate(epimetheus_test_request_duration_seconds_count[5m])
```
## Labeled counter
```promql
# Failed jobs by type
epimetheus_test_jobs_processed_total{status="failed"}
# Job success rate
rate(epimetheus_test_jobs_processed_total{status="success"}[5m]) /
rate(epimetheus_test_jobs_processed_total[5m])
# Total jobs by type
sum by (job_type) (epimetheus_test_jobs_processed_total)
```
## Curl (HTTP API)
```bash
# Port-forward if needed
kubectl port-forward -n monitoring svc/prometheus-kube-prometheus-prometheus 9090:9090 &
# Total requests
curl -s "http://localhost:9090/api/v1/query?query=epimetheus_test_requests_total" | jq .
# Temperature
curl -s "http://localhost:9090/api/v1/query?query=epimetheus_test_temperature_celsius" | jq .
# Request rate
curl -s "http://localhost:9090/api/v1/query?query=rate(epimetheus_test_requests_total[5m])" | jq .
# Histogram p95
curl -s "http://localhost:9090/api/v1/query?query=histogram_quantile(0.95,rate(epimetheus_test_request_duration_seconds_bucket[5m]))" | jq .
```
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