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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.
Email addresses have a lot of gotchas that can make rolling your own logic hard. I haven't used Ruby in a while but there are gems like Mail that can help validating email addresses easier.
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