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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.
Also include a web server library. A decent choice in Java would be Jetty. I have a wrapper around Jetty's servlet api I want people to try so i can get feedback, but you can also choose any of the myriad of java libraries out there for making http services.
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