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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.
Very quickly skimming through the various chapters, it appears that this is gentle introduction as attention has been made on clear and verbose explanations, supplemented with diagrams. Comparable other "courses" could be osdev101 [1] and "Writing an operating system from scratch" [2].
[1] https://github.com/tuhdo/os01/blob/master/Operating_Systems_...
[2] https://www.cs.bham.ac.uk/~exr/lectures/opsys/10_11/lectures...
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