Hi. I'm a Mimir maintainer. I don't have hands-on/production experience with Promscale, so I can't speak about it. I'm chiming in just to add a note about the Mimir deployment modes.

> Cortex comes with highly scalable micro-services architecture this requires deploying 10's of services like ingestor, distributor, querier, etc.

Mimir also supports the monolithic deployment mode. It's about deploying the whole Mimir as a single unit (eg. a Kubernetes StatefulSet) which you then scale out adding more replicas.

More details here: https://grafana.com/docs/mimir/latest/operators-guide/archit...