Write, validate, and optimize PromQL for Prometheus / Grafana Mimir / Grafana Cloud Metrics. Covers `rate` vs `irate` vs `increase`, label matchers and regex,…
PromQL Query Patterns Docs: https://prometheus.io/docs/prometheus/latest/querying/basics/ PromQL returns either an instant vector, a range vector, or a scalar. Golden rule: rate() / increase() require a range vector ≥ 4× the scrape interval. 60s scrape → use [5m] minimum. Prerequisites A Prometheus / Mimir / Grafana Cloud endpoint to query (/api/v1/query or via Grafana Explore) The PromQL pattern library in references/patterns.md Common Workflows 1. Write + validate a query
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