public void SemaphoreDictionaryPerformance()
{
var start = DateTime.Now;
Parallel.For(0, numberOfTests, (i) =>
{
SemaphoreDictionary.Get(Guid.NewGuid().ToString());
});
var elapsed = (DateTime.Now - start).TotalMilliseconds;
Assert.AreEqual(numberOfTests, SemaphoreDictionary.GetNumberOfLocks());
}
public async void BlitzUpdate<T>(string cacheKey, Func<Task<T>> function, long milliseconds)
{
var semaphore = SemaphoreDictionary.Get(cacheKey);
try
{
await semaphore.WaitAsync();
memoryCache.Set(cacheKey, await function.Invoke(), DateTime.Now.AddMilliseconds(milliseconds));
}
finally
{
semaphore.Release();
}
}
public async Task<T> BlitzGet<T>(string cacheKey, Func<Task<T>> function, long? milliseconds = null)
{
if (memoryCache.TryGetValue(cacheKey, out T result)) return result;
var semaphore = SemaphoreDictionary.Get(cacheKey);
try
{
await semaphore.WaitAsync();
if (!memoryCache.TryGetValue(cacheKey, out result))
{
result = await function.Invoke();
memoryCache.Set(cacheKey, result, DateTime.Now.AddMilliseconds(milliseconds ?? defaultMilliseconds));
}
}
finally
{
semaphore.Release();
}
return result;
}
