a growing list of projects and products, e.g. Cortex On storage level, there are object storage backends for Prometheus, e.g. Thanos Remote API can now send WAL over the wire to fill gaps in data There

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