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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.
This is the state of the art afaik.
Just found this as well which could help if you really need to robustly generate atlases dynamically at runtime.
This is the method I use: I made my own single header font rendering library. It uses bitmap rendering so it's more basic than signed distance fields but it works for all of my needs. it's also super easy to use. it hands you a vertex array object along with a font texture that you bind and draw with whatever graphics API you are using. https://github.com/kevinmkchin/TrueTypeAssembler it's public domain so feel free to study it or use it