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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.
This already exists via an open source app you can host yourself, and a paid version made by the same creator which does it all for you and supports other banks. I've been using the open source one on free Heroku tier for years and it works fantastically.
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