public async Task <T> GetOrCreate(string inputKey, Func <Task <T> > createItem)
{
var key = _scopeProvider.ApplyCurrentScope(inputKey);
T cacheEntry;
if (_cache.TryGetValue(key, out cacheEntry))
{
return(cacheEntry);
}
var creationLock = await AcquireCacheEntryCreationLock(key);
try
{
if (!_cache.TryGetValue(key, out cacheEntry))
{
cacheEntry = await createItem();
_cache.Set(key, cacheEntry, DateTimeOffset.Now.Add(_cacheDuration));
}
}
finally
{
creationLock.Release();
}
return(cacheEntry);
}
