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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.
There has been a nodejs based memory hook (https://github.com/Rob--/memoryjs) released that specifically watches the entity table for item changes out for a while now (in the one i saw a while back it had a html/dom page running seperately that you could have on a seperate screen).
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