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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.
My higher education institution has bought every generation of these for Digital Signage since 2014. We use an open-source (abandonware?) Ruby project called Concerto[1] to generate webpages, and the Chrome OS Kiosk Mode[2] feature to boot these things straight to chrome-less full-screen web browsers that load Concerto webpages. It's a nice setup, but I do worry about the future support of both of those pillars.
1. https://github.com/concerto/concerto
2. https://chromeenterprise.google/os/kiosk-and-digital-signage...
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