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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.
None of what? In case I understood you by chance, there's a whole darwin stack on github, grouped neatly at https://opensource.apple.com/releases/. There is a lot of argument about what's open source and what's not, I consider permissive licenses as open source. I did never claim that any Apple software is open source, but due to OS's modular nature I'm willing to say that macOS and iOS consequently is largely open source
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