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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.
Local files are great for small projects though I'm a big fan of Postgres - it can do almost anything! I even used it as a scraping queue as you can lock and unlock rows, i.e. see pq
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