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Seems similar to OpenWhisk: https://github.com/apache/incubator-openwhisk . The built-in metrics reporting of OpenFaas looks useful though.

For a great live demo of the auto-scaling and metrics shown in Grafana see my video from Dockercon's Cool Hacks closing ceremony - https://www.youtube.com/watch?v=-h2VTE9WnZs&t=1058s