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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.
There are a number of open-access logic textbooks, https://github.com/OpenLogicProject/OpenLogic/wiki/Other-Logic-Textbooks. Depending on where you are aiming, I would either look at For All X or the Open Logic Project.
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