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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 can script the lookup for temps, you can turn it into a systemd service file. Also have you looked into Coolero? https://gitlab.com/codifryed/coolero maybe that has the feature you want?
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