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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 I am not misunderstanding what you are trying to built, it seems that it exists already: https://www.powr.io/comments-website-app or https://commento.io/
NOTE:
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Hence, a higher number means a more popular project.