/// <summary>
/// Determines whether [is up to date] [the specified key].
/// </summary>
/// <param name="key">The key.</param>
/// <param name="synchTicks">The synch ticks.</param>
/// <returns></returns>
public static ClusteredCachingSynchronizationStatus IsUpToDate(string key, out long synchTicks)
{
#region check whether we can delay the synchronization check
if (ClusteredCacheController.CheckAtRequestIsUpToDateDelayInMilliseconds > 0 &&
CheckAtRequestDependencies.ContainsKey(key) &&
CheckAtRequestDependencies[key].LastChecked.HasValue &&
CheckAtRequestDependencies[key].LastChecked.Value.AddMilliseconds(ClusteredCacheController.CheckAtRequestIsUpToDateDelayInMilliseconds) > DateTime.UtcNow)
{
synchTicks = CheckAtRequestDependencies[key].Ticks;
return(ClusteredCachingSynchronizationStatus.UpToDate);
}
#endregion
DataAccessManager dam = new DataAccessManager(ConnectionString);
dam.AddInputParameter("@CacheKey", key);
dam.AddInputParameter("@ApplicationId", ClusteredCacheController.ApplicationId);
synchTicks = dam.ExecuteScalar <long>(GetFormattedStoredProcedureName(SP_SELECT));
if (synchTicks <= 0)
{
return(ClusteredCachingSynchronizationStatus.RemovedFromCollection);
}
else
{
if (CheckAtRequestDependencies.ContainsKey(key))
{
if (CheckAtRequestDependencies[key].Ticks.Equals(synchTicks))
{
if (ClusteredCacheController.CheckAtRequestIsUpToDateDelayInMilliseconds > 0)
{
CheckAtRequestDependencies[key] = GetCheckAtRequestInfo(synchTicks);
}
return(ClusteredCachingSynchronizationStatus.UpToDate);
}
else
{
return(ClusteredCachingSynchronizationStatus.OutOfDate);
}
}
else
{
return(ClusteredCachingSynchronizationStatus.NotFound);
}
}
}
