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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.
I have yet to look into Annex K. It didn't seem to gain much traction. Some people at Red Hat wrote a field experience report about it. I recently discovered an implementation of Annex K functions that claims to be pretty portable, safeclib.
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