Mercurial > hg > blitz_stable
view src/org/dancres/blitz/arc/BackingStore.java @ 23:b7e52953b7a6
Add some cache/memory statistics to help spot potential exhaustion and other tuning issues.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Fri, 28 Aug 2009 17:23:33 +0100 |
parents | 3dc0c5604566 |
children |
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package org.dancres.blitz.arc; import java.io.IOException; import org.dancres.blitz.cache.Identifiable; import org.dancres.blitz.cache.Identifier; /** Implementers of this class will be able to store and recover entities based on an Identifier. */ public interface BackingStore { /** @return Identifiable associated with Identifier or <code>null</code> if it cannot be found. */ public Identifiable load(Identifier anId) throws IOException; /** Must deal with handling of delete, update and write. All saves MUST be done asynchronously. i.e. ArcCache does not expect this method to block. This is required to avoid the risk of deadlock under various circumstances. */ public void save(Identifiable anIdentifiable) throws IOException; public String getName(); }