FWIW, when I met Paul Dix a few months ago, he had nothing but good to say about the new Prometheus. They released this blog post shortly after our meeting:
I wouldn't see them as competitors so much as complimentary. Influx is really going for the long term tsdb storage, whereas prometheus is more shorter term with higher resolutions and alerting.
Yup, I'm definitely a fan of their work. The new engine is a great design and all the work on the metrics standard is great. Having that as a standard format for service implementors to expose performance metrics is invaluable and we're going to support that as much as we can.
https://www.influxdata.com/blog/influxdb-now-supports-promet...
I wouldn't see them as competitors so much as complimentary. Influx is really going for the long term tsdb storage, whereas prometheus is more shorter term with higher resolutions and alerting.