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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.
#2 is a case for FFI imho, though I doubt Haskell (or lazy-evaluation in general) is the right language choice for those cases. Having said that, https://clash-lang.org/ is an interesting language for ultra high performance applications.
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