[tony_cannistra]

Interesting! I work on a very similar product.

I don't know Julia well, but I definitely would suggest exploring whether PostGIS can help improve the speed of your DB queries.

I'd also consider how you deliver your geospatial data to your clients -- I'm not sure GeoJSON is your best bet. Protobuf tiles might be better for your use-case (e.g. the Mapbox Vector Tiles spec).

[p4ul]

I completely agree! It would be hard to overstate the power of PostGIS!

For anyone working with GIS data, it's absolutely worth investigating what PostGIS provides and the ease of integration to your existing application!