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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.
Don't you worry, in java is as easy as it can get! I use GSON to parse my object to and from JSON. You can get it on the maven central but I'm pretty sure you can find the jar to import it somewhere although I do not recommend it. Here is a really good gide on how to use it
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