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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.
By far no tutorial, but we have a Cities module in r/Terasology that attempts to connect cities in a procedurally generated world by roads, as can be seen in this visualization (Github). The (messy) code can be found in the same repository Terasology/Cities.
Not sure if that helps in any way, but our Java implementation for the polygonal map gen can be found in Terasology/PolyWorld with the majority of the math in the delauny package. Maybe that's of any help to you, C# and Java may have enough similarities that it could be of help...