world-geojson VS world-countries-centroids

What I would do now, is; use this library https://github.com/georgique/world-geojson load the polygon GPS lat/long data into postgresql or dgraph, and then just query in which country the coordinate/user is. BUT I need it in production, and I already know that I will run into problems and spend time to fix them and so on. And maybe performance will suck and I gotta spend time fixing that too.

const points=[ [11.00211247600492, 55.91555312652204], // Denmark https://github.com/gavinr/world-countries-centroids/blob/master/dist/countries.csv#L170 [-3.156995563222747, 54.90083227861851], // United Kingdom https://github.com/gavinr/world-countries-centroids/blob/master/dist/countries.csv#L91 [12.246695926942852, 41.99599184660806], // Italy https://github.com/gavinr/world-countries-centroids/blob/master/dist/countries.csv#L172 [-2.9429673360930226, 40.03038547506125], // Spain https://github.com/gavinr/world-countries-centroids/blob/master/dist/countries.csv#L249 ]; const geolib=require('geolib') geolib.getCenter(points.map(a=>({latitude:a[1], longitude: a[0]}))) // { longitude: 4.2342450027139575, latitude: 48.44813055117092 }