public virtual async Task <(long fileCount, long totalSize)> CacheStatisticsAsync()
{
long fileCount = 0;
long totalSize = 0;
if (!await _fileSystem.FileExistsAsync(_thumbsRootDir))
{
return(0, 0);
}
fileCount = await _fileSystem.CountFilesAsync(_thumbsRootDir, deep : true);
totalSize = await _fileSystem.GetDirectorySizeAsync(_thumbsRootDir);
return(fileCount, totalSize);
}