I have a passion project 4x4anarchy.com that operates with a Python-MariaDB system for querying map data by latitude and longitude, transforming it into GeoJSON for map display. The website deals with sizable tables, approximately 1 GB in size. I've made extensive optimizations, relying on well-structured indexes, caching mechanisms, and query optimization to enhance performance.
Given these circumstances, how might the incorporation of Julia and some geospatial DB (PostGIS) contribute to further optimizing geospatial data retrieval and presentation, especially when dealing with large datasets and intricate geospatial operations?