public void Add(CacheItem <TKey, TValue> item)
{
// Evict / Remove using policy if capacity has reached
if (_items.Count >= _itemCapacity)
{
TKey keyRemoved = _evictionPolicy.RemoveItem(ref _list);
// Remove from cache
_items.Remove(keyRemoved);
}
// Add using Policy
_evictionPolicy.AddItem(ref _list, item);
// Add items
_items.Add(item.Key, item);
}