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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.
Technically you're right, but you don't need to interact with the forums directly, there are 3rd party software that do it for you. Acquisition for example was the popular choice. Seems like it still works to a certain extent although it has been abandoned.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.