public async Task <T> Get <T>(string key, TimeSpan expireIn, Func <Task <T> > method)
{
if (string.IsNullOrWhiteSpace(key))
{
throw new ArgumentNullException(nameof(key));
}
var result = CacheExtensions.Get(this._cache, key);
if (result != null)
{
return((T)result);
}
var keyLock = _locks.GetOrAdd(key, x => new SemaphoreSlim(1));
await keyLock.WaitAsync();
try
{
result = CacheExtensions.Get(this._cache, key);
if (result != null)
{
return((T)result);
}
var cacheItemPolicy = new MemoryCacheEntryOptions()
{
AbsoluteExpiration = new DateTimeOffset(DateTime.Now.Add(expireIn))
};
result = await method();
if (result != null)
{
CacheExtensions.Set(this._cache, key, result, cacheItemPolicy);
}
}
finally
{
keyLock.Release();
}
return((T)(result ?? default(T)));
}
public PersonModel GetPersonCache(string key)
{
Console.WriteLine("Person data from cache");
return((PersonModel)CacheExtensions.Get(Cache, key));
}
public List <PersonModel> GetPeopleCache(string lastNameKey)
{
Console.WriteLine("People data with last name from cache");
return((List <PersonModel>)CacheExtensions.Get(Cache, lastNameKey));
}