Deep Dive Introduction Intro 2.0 to 2.2.1 2.4 - 2.6 Beyond Outro Three main features Storage backend Caveat: Prometheus 2.0 comes with storage v3 Staleness handling Remote read & write API is now

promql method_code:http_errors:rate5m{code="500"} / ignoring(code) method:http_requests:rate5m ## result {method="get"} 0.04 // 24 / 600 {method="post"} 0.05 // 6 / 120 group_left promql method_code:http_errors:rate5m / ignoring(code) group_left method:http_requests:rate5m ## result {method="get", code="500"} 0.04 // 24 / 600 {method="get", code="404"} 0.05