public NodeTracker(int capacity, TimeSpan minAge, TimeSpan maxAge, CurrentTimeProvider nowProvider)
{
_nowProvider = nowProvider;
_observers = new CacheValueObservable <TValue>();
var maxAgeInMilliseconds = Math.Min(maxAge.TotalMilliseconds, MaxAgeUpperLimit);
_minAge = minAge;
_maxAge = TimeSpan.FromMilliseconds(maxAgeInMilliseconds);
_validityCheckInterval = TimeSpan.FromMilliseconds(maxAgeInMilliseconds / 240.0);
_cacheResetTime = nowProvider().Add(TimeSpan.FromMilliseconds(MaxAgeUpperLimit));
var capacityBucketCount = 20;
_bucketSize = Math.Max(capacity / capacityBucketCount, 1);
_bucketCount = 240 * capacityBucketCount + 5;
_buckets = new BucketCollection <TValue>(this, _bucketCount);
Statistics = new CacheStatistics(capacity, _bucketCount, _bucketSize, minAge, maxAge, _validityCheckInterval);
OpenBucket(0);
}
public void Clear()
{
lock (_lock)
{
_buckets.Empty();
_buckets = new BucketCollection <TValue>(this, _bucketCount);
_cacheResetTime = _nowProvider().Add(TimeSpan.FromMilliseconds(MaxAgeUpperLimit));
OldestBucketIndex = 0;
OpenBucket(0);
Statistics.Reset();
_observers.CacheCleared();
}
}