There's also mbtiles, which is a standard way of storing map tiles in an sqlite database in blob fields. https://www.mapbox.com/guides/an-open-platform/#storin

There's also mbtiles, which is a standard way of storing map tiles in an sqlite database in blob fields. https://www.mapbox.com/guides/an-open-platform/#storing-tiles https://www.mapbox.com/guides/an-open-platform/#storing-tile... you can have sqlite databases that are gigs in size and perform great.