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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.
It looks like Simple Alarm Clock ccan do the essentials, but I've had some minor issues (and annoyances, such as no per-alarm volume). I might just patch in per-alarm volume and try using it for a while as it's open source.
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