[valyala]

Could you give more context on Monarch or Circonus features that are missing in Prometheus?

BTW, I'm working on VictoriaMetrics - open source monitoring solution that works out of the box. See https://github.com/VictoriaMetrics/VictoriaMetrics

[kasey_junk]

1) histograms as the basic primitive. 2) bidirectional transport 3) runtime configurable filtering at source, collection and sync. 4) provenance as part of the transport.