Flutter Master Data load

Question

Flutter App : What is the best place to preload the Master Data? My Query is with regards to preloading cretain Master Data - like list of URLs etc which dont change very frequesntly. I would like to load them once a day. Data is stored in Google Sheets.

Loading it in main function as asyn method preLoadData

void main() {
    preLoadData();
    runApp(const MyApp());
}