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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
https://github.com/dtolnay/faketty does something like this successfully using clap.
It pains me that getargs 0.5.0 is still not released yet. If you can deal with a git dependency, I would highly recommend it, it can do exactly what you want with no fuss.
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