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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.
More about what? The actual source can be found here, but I'd need you to be more specific in order to be more helpful.
This is a decent start for understanding how Lua works with Neovim. As far as guides for Lua itself there are a bunch. This provides a basic overview of how modules work.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.