使用Spring Boot的Ehcache在Test Env中不起作用

问题描述

我正在使用Spring boot(1.4.2.RELEASE)和Ehcache(2.4.3)

I am using Spring boot (1.4.2.RELEASE) and Ehcache (2.4.3)

缓存已在开发环境中使用，但未在其他环境(测试和生产)中使用(命中).

Cache is being used in dev environment but it is not being used(hit) in other environments(test and prod).

代码如下:

pom.xml

<dependency>
            <groupId>net.sf.ehcache</groupId>
            <artifactId>ehcache</artifactId>
</dependency>

在主类上，添加了以下用于缓存的注释

On Main class, have added below annotation for caching

@EnableCaching
public class Application {

在 src/main/resources，ehcache.xml

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="ehcache.xsd"
     updateCheck="true" monitoring="autodetect" dynamicConfig="true">

    <cache name="languageCache" 
      maxEntriesLocalHeap="20"
      overflowToDisk="false"
      eternal="false" 
      diskPersistent="false"
      memoryStoreEvictionPolicy="LRU"/>

     <cache name="countryCache" 
      maxEntriesLocalHeap="280"
      overflowToDisk="false" 
      eternal="false" 
      diskPersistent="false"
      memoryStoreEvictionPolicy="LRU"/>
..
..
more entries
 </ehcache> 

缓存配置文件

@Configuration
@EnableCaching
public class CacheConfig {

    @Bean
    public CacheManager getEhCacheManager() {
        (new EhCacheCacheManager(getEhCacheFactory().getObject())).getCache("languageCache");
        return new EhCacheCacheManager(getEhCacheFactory().getObject());
    }

    @Bean
    public EhCacheManagerFactoryBean getEhCacheFactory() {
        EhCacheManagerFactoryBean factoryBean = new EhCacheManagerFactoryBean();
        factoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));
        factoryBean.setShared(true);
        return factoryBean;
    }
}

关于上述代码的几个问题:

Few questions on above code:

1)是否由于此行

factoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));

factoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));

除了Dev env以外，没有在其他任何环境中使用缓存吗?

Cache is not being hit /used in any other environment except Dev env?

2)我们是否完全需要CacheConfig文件?还是Spring Boot将使用Main Class上的注解(@EnableCaching)检测Ehcache?

2) Do we need CacheConfig file at all? or Spring boot will detect Ehcache using annotation(@EnableCaching) on Main Class?

有什么建议，为什么在其他环境中没有选择缓存(我缺少某些配置?)?

Any suggestion , why cache is not being picked up (some configuration I am missing ?) in other envs?

谢谢

推荐答案

除非您的类路径中有许多 ehcache.xml ，否则它应该可以工作.除非您在类路径中具有符合JSR107的实现(例如，Ehcache 3)，否则 @EnableCaching 不会神奇地起作用.

Unless you have many ehcache.xml in your classpath, it should work. @EnableCaching won't work by magic unless you have a JSR107 compliant implementation in your classpath (e.g. Ehcache 3).

您的代码有效.唯一奇怪的部分是您自己调用了 getObject().仍然可以，但是我会做的.

Your code works. The only weird part is that you are calling the getObject() yourself. It still works but I would have done.

@Bean
public CacheManager cacheManager(net.sf.ehcache.CacheManager cacheManager) {
  return new EhCacheCacheManager(cacheManager);
}

@Bean
public EhCacheManagerFactoryBean cacheManagerFactory() {
  EhCacheManagerFactoryBean factoryBean = new EhCacheManagerFactoryBean();
  factoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));
  factoryBean.setShared(true);
  return factoryBean;
}

也就是说，我实际上会做一些简单的事情:

That said, I would have, in fact, done something simpler:

@Configuration
@EnableCaching
public class CacheConfig extends CachingConfigurerSupport {

    @Bean
    @Override
    public CacheManager cacheManager() {
        return  new EhCacheCacheManager(new net.sf.ehcache.CacheManager());
    }
}

此外，请注意，您确实确实需要共享缓存管理器，这确实非常罕见.它已经在应用程序上下文中共享.因此，很难将其作为单例共享.

Also, note that it is really really rare that you really need a shared cache manager. It is shared across the application context already. So it is quite rare (and frequently dangerous) to share it as a singleton.

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