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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.
Their docs seem to be fairly high level and the API docs don't seem to go into enough detail in terms of how all the pieces fit together for a minimal implementation. Only reference I can come across is their open source builder.
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