> it would be nice to use ClickHouse as a Prometheus backend
Well... that's already possible and it works great! As you might know https://qryn.dev turns ClickHouse into a powerful Prometheus *remote_write* backend and the GO/cloud version supports full PromQL queries off ClickHouse transparently (the JS/Node version transpiles to LogQL instead) and from a performance point of view its well on par with Prometheus, Mimir and Victoriametrics in our internal benchmarks (including Clickhouse as part of the resource set) with millions of inserts/s and broad client compatibility. Same for Logs (LogQL) and Traces (Tempo)
Well... that's already possible and it works great! As you might know https://qryn.dev turns ClickHouse into a powerful Prometheus *remote_write* backend and the GO/cloud version supports full PromQL queries off ClickHouse transparently (the JS/Node version transpiles to LogQL instead) and from a performance point of view its well on par with Prometheus, Mimir and Victoriametrics in our internal benchmarks (including Clickhouse as part of the resource set) with millions of inserts/s and broad client compatibility. Same for Logs (LogQL) and Traces (Tempo)
Disclaimer: I work on qryn