public CacheValueWrapper <TValue> AddOrUpdate(TKey key,
Func <TKey, CacheValueWrapper <TValue> > valueFactory)
{
using (_layer2Repository.GetSyncLock(key))
{
CacheValueWrapper <TValue> value;
if (!_layer2Repository.ContainsKey(key)) //double check lock
{
value = _layer2Repository.AddOrUpdate(key, valueFactory);
}
else
{
value = _layer2Repository.GetValue(key);
}
using (_layer1Repository.GetSyncLock(key))
_layer1Repository.AddOrUpdate(key, k => value);
return(value);
}
}
public bool ContainsKey(TKey key)
{
return(_layer1Repository.ContainsKey(key) || _layer2Repository.ContainsKey(key));
}
