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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.
None of that needs to be done in the JDK, though, and the "big" project that can make a big difference here is jextract. The rest can easily be done by libraries.
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