【发布时间】:2015-05-12 21:24:21
【问题描述】:
我正在使用 ehcache 从数据库中刷新它,但似乎它没有被刷新。
ehcache.xml 文件 ->
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="ehcache.xsd"
updateCheck="true"
monitoring="autodetect"
dynamicConfig="true">
<diskStore path="java.io.tmpdir"/>
<defaultCache
maxElementsInMemory="100"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
overflowToDisk="true"
diskSpoolBufferSizeMB="30"
maxElementsOnDisk="10000000"
diskPersistent="false"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU"/>
<!-- The cache configuration for our Currency cache -->
<cache name="cachename"
maxElementsInMemory="3000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
overflowToDisk="true"
diskPersistent="false" >
<persistence strategy="localTempSwap" synchronousWrites="true" />
<cacheDecoratorFactory class="net.sf.ehcache.constructs.refreshahead.RefreshAheadCacheFactory"
properties="name=myCacheRefresher,
timeToRefreshSeconds=180,
batchSize=10,
numberOfThreads=4,
maximumBacklogItems=100,
evictOnLoadMiss=true" />
</cache>
</ehcache>
config.xml
<ehcache:annotation-driven cache-manager="ehcache" />
<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
<property name="cacheManager" ref="ehcache" />
</bean>
<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean" >
<property name="configLocation" value="ehcache.xml" />
</bean>
<bean id="cachingAttributeSource" class="org.springmodules.cache.annotations.AnnotationCachingAttributeSource" />
CatchFetch.java
@GET
@Path("/Mymethod")
@WebMethod(operationName = "mymethodforUI")
public List<Object> mymethodforUI() {
LOGGER.info("Getting mymethod.");
return dao.mymethod("keyname");
}
CacheDAO.java
@Cacheable(value = "cachename", key = "#key")
public List<Object> mymethod(String key) {
List<Object> res -> a slow query getting from Db
return res;
}
问题 1:缓存在前 180 秒内运行良好,但在 180 秒后,缓存应该会刷新。这种行为没有得到反映。有人能弄清楚为什么吗?
问题 2:有什么方法可以在 cacheDecoratorFactory 定义的缓存刷新发生时记录时间戳?
【问题讨论】:
标签: spring caching refresh ehcache