Where is ehcache diskstore

The design is in favour of the latter. BigMemory is a pure Java product from Terracotta that permits caches to use an additional type of memory store outside the object heap.

This off-heap store, which is not subject to Java GC, allows extremely large caches to be created. The MemoryStore still holds the hottest subset of data from the off-heap store, already in deserialized form, to maintain performance. In practice, however, when the GC involved with larger heaps is taken into account, the off-heap store is faster. The DiskStore provides a disk spooling facility that can be used for additional storage during cache operation and for persisting caches through system restarts.

For more information about cache persistence on disk, refer to the Persistence and Restartability page. The diskStore element in ehcache. If all caches use only MemoryStores, then there is no need to configure a DiskStore. This simplifies configuration, and uses less threads. It is also good when multiple CacheManagers are being used, and multiple disk store paths would need to be configured. DiskStores are configured on a per CacheManager basis.

If one or more caches requires a DiskStore but none is configured, a default directory will be used and a warning message will be logged to encourage explicit configuration of the DiskStore path.

To turn off disk store path creation, comment out the diskStore element in ehcache. The ehcache-failsafe. This will remain the case so as to not affect existing Ehcache deployments. So if you do not wish to use a DiskStore, make sure you specify your own ehcache.

Only Elements which are Serializable can be placed in the DiskStore. Any non-serializable Elements which attempt to overflow to the DiskStore will be removed instead, and a NotSerializableException will be thrown. Writes to and from the disk use ObjectInputStream and the Java serialization mechanism. Serialization speed is affected by the size of the objects being serialized and their type.

It has been found in the ElementTest that:. Byte arrays are 20 times faster to serialize. Make use of byte arrays to increase DiskStore performance. This disk storage is temporary and is cleared after a restart. Revision 4df diff Added by Andreas Kohlbecker almost 5 years ago.

Revision 0ec8f6d7 diff Added by Andreas Kohlbecker almost 5 years ago. Revision d diff Added by Andreas Kohlbecker almost 5 years ago. Revision f diff Added by Andreas Kohlbecker almost 5 years ago.

Applied in changeset cdmlib 1fd4abfabdc5eb4ef8af3c Also available in: Atom PDF. Sign in. Search :. Issues View all issues Summary Gantt Custom queries cdm-dataportal open last 7 days tickets mine in current release phycobank phycobank-registration-closed potentially missed issues recently updated Release3. Severity :. Found in Version :. To avoid this warning consider using the CacheManager factory methods to create a singleton CacheManager or specifying a separate ehcache configuration ehcache.

Associated revisions Revision 7a0bcdb6 diff Added by Andreas Kohlbecker almost 5 years ago ref refactoring CdmCacher to use cachemanger spring bean - not fully working yet. If one or more caches requires a disk store but none is configured, a default directory is used and a warning message is logged to encourage explicit configuration of the disk store path.

Configuring a disk store is optional. If all caches use only memory and off-heap stores , then there is no need to configure a disk store.

This simplifies configuration, and uses fewer threads. This also makes it unnecessary to configure multiple disk store paths when multiple CacheManagers are being used.

Temporary store localTempSwap. Persistent store localRestartable. The localTempSwap persistence strategy allows local disk usage during BigMemory operation, providing an extra tier for storage.

This disk storage is temporary and is cleared after a restart. If the disk store path is not specified, a default path is used, and the default will be auto-resolved in the case of a conflict with another CacheManager.

This option implements a restartable store for all in-memory data. After any restart, the data set is automatically reloaded from disk to the in-memory stores.

In order to use the restartable store, a unique and explicitly specified path is required. Legal values for the path attribute are legal file system paths.