Spring Boot Ehcache3 Multiple CacheManager 적용

• Ehcache3 (Maven)
  • CacheManagerBean 구현을 통한 Ehcache3 적용
    • Ehcache3 부터는 JSR-107 로 CacheManager 로 구현해야 한다고 한다.
    • JSR-107 호환 캐시를 사용하기 위해선 JCache 구현 필요
    • 구현
      • ehcache.xml 생성 (resources 경로 - alias: @Cacheable 의 value 값, key: 키값, value-type: cache 로 저장할 값)

        <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                xmlns="http://www.ehcache.org/v3"
                xmlns:jsr107="http://www.ehcache.org/v3/jsr107"
                xsi:schemaLocation="
                    http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.0.xsd
                    http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.0.xsd">
        
            <cache alias="foo">
                <key-type>java.lang.String</key-type>
                <value-type>java.util.ArrayList</value-type>
                <expiry>
                    <ttl unit="minutes">30</ttl>
                </expiry>
        
                <listeners>
                    <listener>
                        <class>com.lotteon.display.config.ehcache.CacheEventLogger</class>
                        <event-firing-mode>ASYNCHRONOUS</event-firing-mode>
                        <event-ordering-mode>UNORDERED</event-ordering-mode>
                        <events-to-fire-on>CREATED</events-to-fire-on>
                        <events-to-fire-on>EXPIRED</events-to-fire-on>
                    </listener>
                </listeners>
        
                <resources>
                    <heap unit="entries">10000</heap>
                    <offheap unit="MB">1000</offheap>
                </resources>
            </cache>
        
        </config>        
        

      • Cache Logger
        [CacheEventLogger.java]

        ...
        
        import org.ehcache.event.CacheEvent;
        import org.ehcache.event.CacheEventListener;
        
        import lombok.extern.slf4j.Slf4j;
        
        @Slf4j
        public class CacheEventLogger
            implements CacheEventListener<Object, Object> {
        
            @Override
            public void onEvent(
                CacheEvent<? extends Object, ? extends Object> cacheEvent) {
                log.info(">>>>> key={}, old={}, new={}", cacheEvent.getKey(), cacheEvent.getOldValue(), cacheEvent.getNewValue());
            }
        }
        

      • CacheManager 작성 [RedisConfig.java]

        // 그 외 캐시매니저들..
        ...
        
        // Ehcache3 CacheManager
        @Bean
        public JCacheManagerFactoryBean jCacheManagerFactoryBean() throws Exception{
            JCacheManagerFactoryBean jCacheManagerFactoryBean = new JCacheManagerFactoryBean();
            jCacheManagerFactoryBean.setCacheManagerUri(new ClassPathResource("ehcache.xml").getURI());
            return jCacheManagerFactoryBean;
        }
        @Bean
        public JCacheCacheManager ehCacheCacheManager(JCacheManagerFactoryBean jCacheManagerFactoryBean) {
            JCacheCacheManager jCacheCacheManager = new JCacheCacheManager();
            jCacheCacheManager.setCacheManager(jCacheManagerFactoryBean.getObject());
            return jCacheCacheManager;
        }      
        
        ...
        
        

 

참고

- https://www.ehcache.org/

- https://kok202.tistory.com/

- https://docs.spring.io/