private async Task <SmartPlaylistDto[]> GetAllCachedSmartPlaylistAsync()
{
return((await _memCache.GetOrCreateManyAsync(async() =>
{
return (await _decorated.GetAllSmartPlaylistsAsync()
.ConfigureAwait(false))
.ToDictionary(x => (object)x.Id, y => (object)y);
}, Const.GetAllSmartPlaylistsCacheExpiration).ConfigureAwait(false))
.OfType <SmartPlaylistDto>()
.ToArray());
}