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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.
If you actually want to serialize your data structures to a json file, I wrote a library to do it here https://github.com/erdo/persista bit it's really just one class, feel free to copy bits of it
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