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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.
As for switch hole sizes, I haven't designed anything myself but heard ppl use http://builder.swillkb.com/ to design their plates - it's some generator with size standards for switches and stabs.
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