/// <summary>
///
/// </summary>
/// <param name="realCache"></param>
/// <param name="backgroundScheduler"></param>
/// <param name="pollTimer"></param>
public CacheManager(Cache realCache, BackgroundScheduler backgroundScheduler, ExpirationPollTimer pollTimer)
{
if (pollTimer == null) throw new ArgumentNullException("pollTimer");
this.realCache = realCache;
this.pollTimer = pollTimer;
this.backgroundScheduler = backgroundScheduler;
pollTimer.StartPolling(backgroundScheduler.ExpirationTimeoutExpired);
}