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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.
I didn't need to because by the time it came out I already knew Kotlin, personally I wrote this https://github.com/Zhuinden/guide-to-kotlin/wiki
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