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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.
I know I say this every time one of these comes up for sale, but it's such a great little box. I installed a WWAN card and mSATA drive in mine and switched to Linux so I could run FQ_CoDel/Cake and an EAP Proxy among other things. (I also had trouble getting LACP and the WWAN card working in pfSense.)
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