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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've also documented a lot of the design decisions I made when developing it, alongside with some stuff about Emacs itself: see here. This information may also be useful for you if you're trying to understand how Emacs works internally (at C-code level).
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