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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.
I don't know how flexible your graph is BUT it does look like it supports what I would need. Currently we used https://github.com/AppPear/ChartView which looks great but has one fatal flaw for our use case, it has no support for X-axis labelling at all. We were exploring either using something else or developing our own alternative, that's why I was interested when I saw your video.
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