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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.
Along the same lines, I use Christopher Swenson's sort.h at https://github.com/swenson/sort/
You get the choice of many sorting routines, including:
NOTE:
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