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-<?xml version="1.0" encoding="UTF-8"?>
-
-<!--
-CacheManager Configuration
-==========================
-An ehcache.xml corresponds to a single CacheManager.
-
-See instructions below or the ehcache schema (ehcache.xsd) on how to configure.
-
-System property tokens can be specified in this file which are replaced when the configuration
-is loaded. For example multicastGroupPort=${multicastGroupPort} can be replaced with the
-System property either from an environment variable or a system property specified with a
-command line switch such as -DmulticastGroupPort=4446. Another example, useful for Terracotta
-server based deployments is <terracottaConfig url="${serverAndPort}"/ and specify a command line
-switch of -Dserver36:9510
-
-The attributes of <ehcache> are:
-* name - an optional name for the CacheManager. The name is optional and primarily used
-for documentation or to distinguish Terracotta clustered cache state. With Terracotta
-clustered caches, a combination of CacheManager name and cache name uniquely identify a
-particular cache store in the Terracotta clustered memory.
-* updateCheck - an optional boolean flag specifying whether this CacheManager should check
-for new versions of Ehcache over the Internet. If not specified, updateCheck="true".
-* dynamicConfig - an optional setting that can be used to disable dynamic configuration of caches
-associated with this CacheManager. By default this is set to true - i.e. dynamic configuration
-is enabled. Dynamically configurable caches can have their TTI, TTL and maximum disk and
-in-memory capacity changed at runtime through the cache's configuration object.
-* monitoring - an optional setting that determines whether the CacheManager should
-automatically register the SampledCacheMBean with the system MBean server.
-
-Currently, this monitoring is only useful when using Terracotta clustering and using the
-Terracotta Developer Console. With the "autodetect" value, the presence of Terracotta clustering
-will be detected and monitoring, via the Developer Console, will be enabled. Other allowed values
-are "on" and "off". The default is "autodetect". This setting does not perform any function when
-used with JMX monitors.
--->
-<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:noNamespaceSchemaLocation="http://ehcache.sourceforge.net/ehcache.xsd"
- updateCheck="false"
- monitoring="off"
- dynamicConfig="true">
-
- <!--
- DiskStore configuration
- =======================
-
- The diskStore element is optional. To turn off disk store path creation, comment out the diskStore
- element below.
-
- Configure it if you have overflowToDisk or diskPersistent enabled for any cache.
-
- If it is not configured, and a cache is created which requires a disk store, a warning will be
- issued and java.io.tmpdir will automatically be used.
-
- diskStore has only one attribute - "path". It is the path to the directory where
- .data and .index files will be created.
-
- If the path is one of the following Java System Property it is replaced by its value in the
- running VM. For backward compatibility these should be specified without being enclosed in the ${token}
- replacement syntax.
-
- The following properties are translated:
- * user.home - User's home directory
- * user.dir - User's current working directory
- * java.io.tmpdir - Default temp file path
- * ehcache.disk.store.dir - A system property you would normally specify on the command line
- e.g. java -Dehcache.disk.store.dir=/u01/myapp/diskdir ...
-
- Subdirectories can be specified below the property e.g. java.io.tmpdir/one
-
- -->
- <!-- NOTE: The path is overridden in net.sourceforge.subsonic.cache.CacheFactory -->
- <diskStore path="java.io.tmpdir"/>
-
-
- <!-- Uncomment this to enable cache monitoring. -->
- <!--<cacheManagerPeerListenerFactory-->
- <!--class="org.terracotta.ehcachedx.monitor.probe.ProbePeerListenerFactory"-->
- <!--properties="monitorAddress=localhost, monitorPort=9889, memoryMeasurement=true" />-->
- <!---->
-
- <!--
- Cache configuration
- ===================
-
- The following attributes are required.
-
- name:
- Sets the name of the cache. This is used to identify the cache. It must be unique.
-
- maxElementsInMemory:
- Sets the maximum number of objects that will be created in memory. 0 = no limit.
- In practice no limit means Integer.MAX_SIZE (2147483647) unless the cache is distributed
- with a Terracotta server in which case it is limited by resources.
-
- maxElementsOnDisk:
- Sets the maximum number of objects that will be maintained in the DiskStore
- The default value is zero, meaning unlimited.
-
- eternal:
- Sets whether elements are eternal. If eternal, timeouts are ignored and the
- element is never expired.
-
- overflowToDisk:
- Sets whether elements can overflow to disk when the memory store
- has reached the maxInMemory limit.
-
- The following attributes and elements are optional.
-
- overflowToOffHeap:
- (boolean) This feature is available only in enterprise versions of Ehcache.
- When set to true, enables the cache to utilize off-heap memory
- storage to improve performance. Off-heap memory is not subject to Java
- GC. The default value is false.
-
- maxMemoryOffHeap:
- (string) This feature is available only in enterprise versions of Ehcache.
- Sets the amount of off-heap memory available to the cache.
- This attribute's values are given as <number>k|K|m|M|g|G|t|T for
- kilobytes (k|K), megabytes (m|M), gigabytes (g|G), or terabytes
- (t|T). For example, maxMemoryOffHeap="2g" allots 2 gigabytes to
- off-heap memory.
-
- This setting is in effect only if overflowToOffHeap is true.
-
- Note that it is recommended to set maxElementsInMemory to at least 100 elements
- when using an off-heap store, otherwise performance will be seriously degraded,
- and a warning will be logged.
-
- The minimum amount that can be allocated is 128MB. There is no maximum.
-
- timeToIdleSeconds:
- Sets the time to idle for an element before it expires.
- i.e. The maximum amount of time between accesses before an element expires
- Is only used if the element is not eternal.
- Optional attribute. A value of 0 means that an Element can idle for infinity.
- The default value is 0.
-
- timeToLiveSeconds:
- Sets the time to live for an element before it expires.
- i.e. The maximum time between creation time and when an element expires.
- Is only used if the element is not eternal.
- Optional attribute. A value of 0 means that and Element can live for infinity.
- The default value is 0.
-
- diskPersistent:
- Whether the disk store persists between restarts of the Virtual Machine.
- The default value is false.
-
- diskExpiryThreadIntervalSeconds:
- The number of seconds between runs of the disk expiry thread. The default value
- is 120 seconds.
-
- diskSpoolBufferSizeMB:
- This is the size to allocate the DiskStore for a spool buffer. Writes are made
- to this area and then asynchronously written to disk. The default size is 30MB.
- Each spool buffer is used only by its cache. If you get OutOfMemory errors consider
- lowering this value. To improve DiskStore performance consider increasing it. Trace level
- logging in the DiskStore will show if put back ups are occurring.
-
- clearOnFlush:
- whether the MemoryStore should be cleared when flush() is called on the cache.
- By default, this is true i.e. the MemoryStore is cleared.
-
- statistics:
- Whether to collect statistics. Note that this should be turned on if you are using
- the Ehcache Monitor. By default statistics is turned off to favour raw performance.
- To enable set statistics="true"
-
- memoryStoreEvictionPolicy:
- Policy would be enforced upon reaching the maxElementsInMemory limit. Default
- policy is Least Recently Used (specified as LRU). Other policies available -
- First In First Out (specified as FIFO) and Less Frequently Used
- (specified as LFU)
-
- copyOnRead:
- Whether an Element is copied when being read from a cache.
- By default this is false.
-
- copyOnWrite:
- Whether an Element is copied when being added to the cache.
- By default this is false.
- -->
-
-
- <!--
- Default Cache configuration. These settings will be applied to caches
- created programmatically using CacheManager.add(String cacheName).
- This element is optional, and using CacheManager.add(String cacheName) when
- its not present will throw CacheException
-
- The defaultCache has an implicit name "default" which is a reserved cache name.
-
- <defaultCache
- maxElementsInMemory="10000"
- eternal="false"
- timeToIdleSeconds="120"
- timeToLiveSeconds="120"
- overflowToDisk="true"
- diskSpoolBufferSizeMB="10"
- maxElementsOnDisk="10000000"
- diskPersistent="false"
- diskExpiryThreadIntervalSeconds="120"
- memoryStoreEvictionPolicy="LRU"
- statistics="true"
- />
- -->
-
- <cache name="mediaFileMemoryCache"
- maxElementsInMemory="1000"
- eternal="false"
- timeToIdleSeconds="0"
- timeToLiveSeconds="10"
- overflowToDisk="false"
- statistics="true"
- />
-
- <cache name="musicFileMemoryCache"
- maxElementsInMemory="1000"
- eternal="false"
- timeToIdleSeconds="0"
- timeToLiveSeconds="10"
- overflowToDisk="false"
- statistics="true"
- />
-
- <cache name="userCache"
- maxElementsInMemory="1000"
- eternal="false"
- timeToIdleSeconds="172800"
- timeToLiveSeconds="172800"
- overflowToDisk="false"
- diskSpoolBufferSizeMB="1"
- statistics="true"
- />
-
- <!--
- Sample caches. Following are some example caches. Remove these before use.
- -->
-
- <!--
- Sample cache named sampleCache1
- This cache contains a maximum in memory of 10000 elements, and will expire
- an element if it is idle for more than 5 minutes and lives for more than
- 10 minutes.
-
- If there are more than 10000 elements it will overflow to the
- disk cache, which in this configuration will go to wherever java.io.tmp is
- defined on your system. On a standard Linux system this will be /tmp"
-
- <cache name="sampleCache1"
- maxElementsInMemory="10000"
- maxElementsOnDisk="1000"
- eternal="false"
- overflowToDisk="true"
- diskSpoolBufferSizeMB="20"
- timeToIdleSeconds="300"
- timeToLiveSeconds="600"
- memoryStoreEvictionPolicy="LFU"
- transactionalMode="off"
- />
- -->
-
-
- <!--
- Sample cache named sampleCache2
- This cache has a maximum of 1000 elements in memory. There is no overflow to disk, so 1000
- is also the maximum cache size. Note that when a cache is eternal, timeToLive and
- timeToIdle are not used and do not need to be specified.
-
- <cache name="sampleCache2"
- maxElementsInMemory="1000"
- eternal="true"
- overflowToDisk="false"
- memoryStoreEvictionPolicy="FIFO"
- />
- -->
-
-
- <!--
- Sample cache named sampleCache3. This cache overflows to disk. The disk store is
- persistent between cache and VM restarts. The disk expiry thread interval is set to 10
- minutes, overriding the default of 2 minutes.
-
- <cache name="sampleCache3"
- maxElementsInMemory="500"
- eternal="false"
- overflowToDisk="true"
- timeToIdleSeconds="300"
- timeToLiveSeconds="600"
- diskPersistent="true"
- diskExpiryThreadIntervalSeconds="1"
- memoryStoreEvictionPolicy="LFU"
- />
- -->
-
-</ehcache>