A {@code CacheWriterManager} coordinates how element are written to a back-end store.
The {@code CacheWriterManager} will in its turn call the {@code CacheWriter} that belongs to the relevant cache to performthe actual write logic as it's implemented by the user.
@author Geert Bevin
@version $Id: CacheWriterManager.java 2379 2010-05-03 15:16:18Z gbevin $