Cache control header configuration for the C# in the cards website

program.cs

app.UseStaticFiles(new StaticFileOptions()
{
  OnPrepareResponse =
  r => {
    string path = r.File.PhysicalPath;
    if (path.EndsWith(".css") || path.EndsWith(".js") || 
    path.EndsWith(".gif") || path.EndsWith(".jpg") || 
    path.EndsWith(".png") || path.EndsWith(".svg") || path.EndsWith(".webp"))
    {
      TimeSpan maxAge = new TimeSpan(370, 0, 0, 0);
      r.Context.Response.Headers.Append("Cache-Control", "max-age=" + maxAge.TotalSeconds.ToString("0"));
    }
  },
});