public T GetOrAdd <T>(string key, Func <T> valueFactory, Action <ICacheConfiguration> configurator)
{
key.ThrowIfNullOrEmpty();
valueFactory.ThrowIfNull();
try
{
if (Contains(key))
{
return((T)Cache[key]);
}
var policy = new CachePolicyFactory().Create(configurator);
var value = valueFactory();
if (!typeof(T).IsValueType && value == null)
{
return(default(T));
}
Cache.Add(key, value, policy);
return(value);
}
catch (Exception)
{
Cache.Remove(key);
throw;
}
}
public async Task <T> GetOrAddAsync <T>(string key, Func <Task <T> > valueFactory, Action <ICacheConfiguration> configurator)
{
var policy = new CachePolicyFactory().Create(configurator);
var asyncLazyValue = new LazyAsync <T>(valueFactory);
var existingValue = (LazyAsync <T>)Cache.AddOrGetExisting(KeyPrefix + key, asyncLazyValue, policy);
if (existingValue != null)
{
asyncLazyValue = existingValue;
}
try
{
var result = await asyncLazyValue;
if (asyncLazyValue != Cache.AddOrGetExisting(KeyPrefix + key, new LazyAsync <T>(valueFactory), policy))
{
return(await GetOrAddAsync(KeyPrefix + key, valueFactory, configurator));
}
return(result);
}
catch (Exception)
{
await RemoveAsync(KeyPrefix + key);
throw;
}
}
