org.cache2k.storage

Interface FlushableStorage

All Superinterfaces:

CacheStorage

All Known Implementing Classes:

ClearStorageBuffer, ImageFileStorage

public interface FlushableStorage
extends CacheStorage

Optional interface for a CacheStorage if the storage needs to flush any unwritten data to make it persistent.

Author:

Jens Wilke; created: 2014-06-09

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	FlushableStorage.FlushContext

Nested classes/interfaces inherited from interface org.cache2k.storage.CacheStorage

CacheStorage.EntryFilter, CacheStorage.EntryVisitor, CacheStorage.MultiThreadedContext, CacheStorage.VisitContext

Method Summary

Methods

Modifier and Type	Method and Description
void	flush(FlushableStorage.FlushContext ctx, long now) Flush any unwritten information to disk.

Methods inherited from interface org.cache2k.storage.CacheStorage

clear, close, contains, get, getEntryCount, put, remove, visit

Method Detail

flush

void flush(FlushableStorage.FlushContext ctx,
         long now)
           throws Exception

Flush any unwritten information to disk. The method returns when the flush is finished and everything is written. The cache is not protecting the storage from concurrent read/write operation while the flush is performed.

A flush is initiated by client request or on regular intervals after a modification has happened.

Throws:

Exception