How do items get automatically removed from the cache?

[eightmd]

I've just started looking at JBossCache and I was writing some tests to see how it works. I am trying to put nodes into the cache and then see them expire. I have used a region and used n LRU eviction policy. I was thinking that setting TimeToLiveSeconds and/or MaxAgeSeconds would cause the node to be completely removed from the cache. I know that the RegionManager has to wake up so I setWakeUpIntervalSeconds on the EvictionConfiguration to 4 seconds.

 LRUConfiguration lru = new LRUConfiguration();
 lru.setMaxNodes(5000);
 lru.setTimeToLiveSeconds(2);
 lru.setMaxAgeSeconds(2);

I did a sleep for 10 seconds and the node was still there.

I then tried doing the following which I found in the user manual.

 Long future = new Long(System.currentTimeMillis() + 2000);
 cache.getRoot().getChild(nodeFqn).put(ExpirationConfiguration.EXPIRATION_KEY, future);

 assertTrue(cache.getRoot().hasChild(nodeFqn));
 Thread.sleep(10000);

 // after 5 seconds, expiration completes
 assertFalse(cache.getRoot().hasChild(nodeFqn));

The node was still there.

Then I tried this:

 ExpirationConfiguration ec = new ExpirationConfiguration();
 ec.setTimeToLiveSeconds(2);

cache.getRoot().getChild(nodeFqn).put(ExpirationConfiguration.EXPIRATION_KEY, ec);

 assertTrue(cache.getRoot().hasChild(nodeFqn));
 Thread.sleep(10000);

 // after 5 seconds, expiration completes
 Node n1 = cache.getRoot().getChild(nodeFqn);
 assertFalse(cache.getRoot().hasChild(nodeFqn));

The node was still there. So if anyone can tell me what I'm missing I would appreciate it. I am expecting to see the node gone from the cache by one of these methods. Thanks for any help you can provide.

[manik]

Are you actually attaching the LRU or Expiry policy to a region? :-)

Look at EvictionConfig and EvictionRegionConfig.

And make sure you add your EvictionConfig to your cache's Configuration using Configuration.setEvictionConfig() and use this Configuration instance with the CacheFactory to create a cache.