> Know of anyone using this in production outside Stripe?

In addition to Intercom (mentioned in a sibling comment), some other companies off the top of my head who are also using Veneur: Sentry, Bluecore, Axiom, Quantcast, and at least two more that I'm not sure if I have permission to name publicly.

There are more too - since Veneur is an OSS project, we only find out when people submit submit PRs to the project or happen to contact us for another reason. It makes for a pleasant surprise when we find out!

We use it at Segment as a replacement for Datadog's Python-based (and dog slow) dogstatsd server. Veneur is not only faster on a per-CPU basis, but scales to multiple CPUs as well.

I consider it absolutely essential for collecting metrics on large instances that run hundreds of busy tasks emitting hundreds or thousands of metrics per second.

Intercom use it heavily in production.

Source: am engineer at Intercom.