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ehcache配置备忘笔记

2010-11-04 15:04:17| 分类： ehcache | 标签： |举报 |字号大中小订阅

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ehcache被hibernate用作默认的缓存工具，想必就是个好东西。配置使用都还蛮简单。
其官网配置说明见：http://ehcache.org/documentation/configuration.html
配置：
<cache
        name="mmsIds"
        maxElementsInMemory="9000000"
        eternal="false"
        overflowToDisk="true"
        timeToIdleSeconds="86400"
        timeToLiveSeconds="86400"
        diskPersistent="true"
        memoryStoreEvictionPolicy="LFU"
    />
这里仅说说diskPersistent，这个如果设置为false，那么你的程序缓存了内容后，如果程序关闭了，那么缓存的东西就丢失了，因为这个如果设置为false，那么就不会持久化到硬盘，如果要下次启动程序还能访问上次的缓存那么就需要设置为true。
使用：
CacheManager manager=null;
Cache cache=null;
try {
    manager=CacheManager.create(new FileInputStream(new File("./ehcache.xml")));
} catch (CacheException e) {
    throw new RuntimeException("EHCache缓存构建失败:"+e.getMessage(),e);
} catch (FileNotFoundException e) {
    throw new RuntimeException("EHCache配置文件未找到:"+e.getMessage(),e);
}
cache = manager.getCache("mmsIds");
String key="zhangshan";
int score=90;
cache.put(new Element(key,score));

//red
int score=Integer.parseInt(cache.get(zhangshan).getValue().toString());

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