public HomeController(ILogger <HomeController> logger, IWebHostEnvironment webHostEnvironment)
{
var dataFolder = Path.Combine(webHostEnvironment.WebRootPath, "data");
_logger = logger;
_memoryMap = new MemoryMap <FileStatus>(memoryMapName: "demo", directoryPath: dataFolder, fileName: "info.json");
_fileStatus = _memoryMap.ReadData();
}