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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 okay with using a Spartan 6 device and ISE WebPACK, a Panologic G2 has 100k LUT6s, extra RAM and flash, Ethernet, USB, and two DVI/HDMI outputs, for under $50. Here's a github page, about developing for one.
NOTE:
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