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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.
If you are just playing around and dont want to commit to anything or focus on db decisions yet, try some Node JSON DB.
JSON DB sounds interesting. Noticed the link you gave 404'ed, found https://github.com/Belphemur/node-json-db
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