Refit + Prism Forms + Fusillade

IApiService.cs

public interface IApiService<TInterfaceService>
{
    // Use to fetch data into a cache when a page loads. Expect that
    // these requests will only get so far then give up and start failing
    TInterfaceService Speculative { get; }

    // Use for network requests that are fetching data that the user is
    // waiting on *right now*
    TInterfaceService UserInitiated { get; }

    // Use for network requests that are running in the background
    TInterfaceService Background { get; }
}

@syahman
To understand difference better kindly visit Prism documentation (Very good documentation)

Prism Forms Documentation

One suggestion - Use Xamarin.Essential for Connectivity instead of Plugin.Connectivity