public bool Add(TKey key, double expirationSeconds)
{
if (!Monitor.TryEnter(syncRoot, MAX_LOCK_WAIT))
{
throw new ApplicationException("Lock could not be acquired after " + MAX_LOCK_WAIT + "ms");
}
try
{
// This is the actual adding of the key
if (timedStorageIndex.ContainsKey(key))
{
return(false);
}
else
{
TimedCacheKey <TKey> internalKey = new TimedCacheKey <TKey>(key,
DateTime.UtcNow +
TimeSpan.FromSeconds(expirationSeconds));
timedStorage.Add(internalKey);
timedStorageIndex.Add(key, internalKey);
return(true);
}
}
finally
{
Monitor.Exit(syncRoot);
}
}
public bool Update(TKey key, TimeSpan slidingExpiration)
{
if (!Monitor.TryEnter(syncRoot, MAX_LOCK_WAIT))
{
throw new ApplicationException("Lock could not be acquired after " + MAX_LOCK_WAIT + "ms");
}
try
{
if (timedStorageIndex.ContainsKey(key))
{
timedStorage.Remove(timedStorageIndex[key]);
timedStorageIndex.Remove(key);
}
else
{
return(false);
}
TimedCacheKey <TKey> internalKey = new TimedCacheKey <TKey>(key, slidingExpiration);
timedStorage.Add(internalKey);
timedStorageIndex.Add(key, internalKey);
return(true);
}
finally
{
Monitor.Exit(syncRoot);
}
}
public TKey this[int i]
{
get
{
TKey o;
if (!Monitor.TryEnter(syncRoot, MAX_LOCK_WAIT))
{
throw new ApplicationException("Lock could not be acquired after " + MAX_LOCK_WAIT + "ms");
}
try
{
if (timedStorage.Count > i)
{
TimedCacheKey <TKey> tkey = timedStorage[i];
o = tkey.Key;
timedStorage.Remove(tkey);
tkey.Accessed();
timedStorage.Insert(i, tkey);
return(o);
}
else
{
throw new ArgumentException("Key not found in the cache");
}
}
finally
{
Monitor.Exit(syncRoot);
}
}
set { AddOrUpdate(value, DefaultTime); }
}