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有人可以告诉我下面的实现有什么问题。我正在尝试删除整个缓存，其次，我想预填充/填充缓存。但是，当执行这两种方法时，我在下面仅删除两个缓存，而不是预填充/启动缓存。任何想法？

import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.annotation.Caching;

@Cacheable(cacheNames = "cacheOne")
List<User> cacheOne() throws Exception {...}

@Cacheable(cacheNames = "cacheOne")
List<Book> cacheTwo() throws Exception {...}

@Caching (
        evict = {
                @CacheEvict(cacheNames = "cacheOne", allEntries = true),
                @CacheEvict(cacheNames = "CacheTwo", allEntries = true)
        }
)
void clearAndReloadEntireCache() throws Exception
{
    // Trying to reload cacheOne and cacheTwo inside this method
    // Is this even possible? if not what is the correct approach?
    cacheOne();
    cacheTwo(); 
}

我有 spring boot 应用程序（v1.4.0），更重要的是，利用以下依赖项：

<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
     <groupId>org.ehcache</groupId>
     <artifactId>ehcache</artifactId>
     <version>3.3.0</version>
 </dependency>
 <dependency>
     <groupId>javax.cache</groupId>
     <artifactId>cache-api</artifactId>
     <version>1.0.0</version>
 </dependency>
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1 回答 1

1

如果调用该clearAndReloadEntireCache()方法，缓存拦截器只会处理该方法。调用同一对象的其他方法：cacheOne()并且cacheTwo()不会在运行时导致缓存拦截，尽管它们都用@Cacheable.

您可以通过使用如下所示的两个方法调用重新加载cacheOne和cacheTwo来实现所需的功能：

@Caching(evict = {@CacheEvict(cacheNames = "cacheOne", allEntries = true, beforeInvocation = true)},
        cacheable = {@Cacheable(cacheNames = "cacheOne")})
public List<User> cleanAndReloadCacheOne() {
    return cacheOne();
}

@Caching(evict = {@CacheEvict(cacheNames = "cacheTwo", allEntries = true, beforeInvocation = true)},
        cacheable = {@Cacheable(cacheNames = "cacheTwo")})
public List<Book> cleanAndReloadCacheTwo() {
    return cacheTwo();
}
于 2017-11-25T19:51:21.703 回答