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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 been confused by the way it's supposed to work and created my own tool. It's not really self-hosted and doesn't build apps by itself, but depending on your use-case it could work (kind of unlikely though).
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