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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.
Synergy was open source then went closed source and paid. There is an open source fork of the original synergy code base called Barrier, which works well and is free! https://github.com/debauchee/barrier
NOTE:
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