Elements in the cacheoverride.xml file

You can modify elements in the SearchIndexCache section of cacheoverride.xml.

The following table describes some of the elements that you can modify in the SearchIndexCache section of cacheoverride.xml.

Element Description
maxElementsInMemory Required. Specifies the maximum number of elements that can be stored in memory. If you specify zero (0), there is no limit on the number of elements that can be stored in memory.

By default, the value is set to 10000.
overflowToDisk Required. Specifies whether or not elements are written to disk when the memory store has reached the maxElementsInMemory limit.

Valid values are true or false. If set to true, the elements are written to disk when the memory store has reached the maxElementsInMemory limit.
maxElementsOnDisk Required. Specifies the maximum number of elements that can be stored on disk. If you specify zero (0), there is no limit on the number of elements that can be stored on disk.

By default, the value is set to 0.
eternal Required. Specifies whether or not elements are eternal. By default, the value is set to true.
Note: Do not change this default value.
diskPersistent Optional. Specifies whether or not the disk store persists between restarts of the Java™ Virtual Machine (JVM). By default, the value is set to false.
Note: Do not change this default value.
memoryStoreEvictionPolicy Optional. Specifies the algorithm to be used for in-memory cache when the memory store reaches the maxElementsInMemory limit. Valid values:
  • LRU (Least Recently Used)
  • FIFO (First In First Out)
  • LFU (Least Frequently Used)

By default, the value is set to LRU.

Note: Disk storage always uses the LFU algorithm.
diskSpoolBufferSizeMB Optional. Specifies the size (in MB) to allocate the disk store for a spool buffer. Writes are made to this area and then asynchronously written to disk. By default, the size is set to 30 (MB).
Note: Each spool buffer is used only by its cache. If you get OutOfMemory errors, consider lowering this value. To improve disk store performance, consider increasing this value.
Note: After you create cacheoverride.xml, you must update and rebuild the resources.jar file.