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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 already know Java and can develop on Minecraft there is a Java library for Nano https://github.com/koczadly/jNano - I'm sure a plugin to use nano on a server for either a faucet type thing or server shop would go down well.
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