Cache invalidation in Ehcache -

i using ehcache in hibernate.

how can notify cache database has changed? how can invalidate cached data? how can programmatically achieve this?

what mean? there 2 ways make change in database: inside app & outside app

inside app can trigger invalidation. second 1 harder solve. cache elements stored key , based on key can delete it.

cachemanager manager = cachemanager.getinstance(); cache = manager.getcache(cachename); cache.remove(key);  or   cache.removeall(); 

depending how configured ehcache of course. need know name of cache holds object.