public bool IsActiveUrl(string url)
{
if (url == null)
{
throw new ArgumentNullException(nameof(url));
}
var cacheKey = $"url_status{url}";
if (!_statusCache.Exists(cacheKey))
{
_statusCache.SetValue(cacheKey, _webRequestHelper.IsActiveUrl(url));
}
return(_statusCache.GetValue(cacheKey).ToString() == true.ToString());
}