You could copy their design, if you know how you want to project your nodes into 2D. Essentially dividing the visualisation into a very large number of tiles, generated at 18 different zoom levels, then the 'slippy map' viewer loads the tiles corresponding to the chosen field of view.
Then a PostGIS database alongside, letting you run a query to get all the nodes in a given rectangle - such as if you want to find the ID number of a given node.
You could copy their design, if you know how you want to project your nodes into 2D. Essentially dividing the visualisation into a very large number of tiles, generated at 18 different zoom levels, then the 'slippy map' viewer loads the tiles corresponding to the chosen field of view.
Then a PostGIS database alongside, letting you run a query to get all the nodes in a given rectangle - such as if you want to find the ID number of a given node.