@Cacheable에 대한 TTL을 설정할 수 있습니까?

@Cacheable에 대한 TTL을 설정할 수 있습니까?

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@CacheableSpring 3.1에 대한 주석 지원을 시도하고 있으며 TTL을 설정하여 잠시 후 캐시 된 데이터를 지우는 방법이 있는지 궁금합니다. 지금 당장은를 사용하여 직접 정리해야하며 @CacheEvict함께 사용하여 @ScheduledTTL 구현을 직접 만들 수 있지만 그렇게 간단한 작업에는 약간 많은 것 같습니다.

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http://static.springsource.org/spring/docs/3.1.x/spring-framework-reference/htmlsingle/spring-framework-reference.html#cache-specific-config 참조 하십시오 :

TTL / TTI / 퇴거 정책 / XXX 기능은 어떻게 설정하나요?

캐시 공급자를 통해 직접. 캐시 추상화는 ... 음, 추상화는 캐시 구현이 아닙니다.

따라서 EHCache를 사용하는 경우 EHCache의 구성을 사용하여 TTL을 구성하십시오.

Guava의 CacheBuilder 를 사용하여 캐시를 빌드하고이 캐시의 ConcurrentMap 뷰를 ConcurrentMapCacheFactoryBean의 setStore 메소드에 전달할 수도 있습니다.

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Spring 3.1 및 Guava 1.13.1 :

@EnableCaching
@Configuration
public class CacheConfiguration implements CachingConfigurer {

    @Override
    public CacheManager cacheManager() {
        ConcurrentMapCacheManager cacheManager = new ConcurrentMapCacheManager() {

            @Override
            protected Cache createConcurrentMapCache(final String name) {
                return new ConcurrentMapCache(name,
                    CacheBuilder.newBuilder().expireAfterWrite(30, TimeUnit.MINUTES).maximumSize(100).build().asMap(), false);
            }
        };

        return cacheManager;
    }

    @Override
    public KeyGenerator keyGenerator() {
        return new DefaultKeyGenerator();
    }

}

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다음은 Spring에서 Guava Cache를 설정하는 전체 예제입니다. 나는 Ehcache보다 Guava를 사용했는데 무게가 약간 가볍고 구성이 나에게 더 간단 해 보였습니다.

Maven 종속성 가져 오기

이러한 종속성을 maven pom 파일에 추가하고 clean 및 packages를 실행하십시오. 이 파일은 CacheBuilder에서 사용하기위한 Guava dep 및 Spring 도우미 메서드입니다.

    <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
        <version>18.0</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>4.1.7.RELEASE</version>
    </dependency>

캐시 구성

Java 구성을 사용하여 캐시를 구성하려면 CacheConfig 파일을 만들어야합니다.

@Configuration
@EnableCaching
public class CacheConfig {

   public final static String CACHE_ONE = "cacheOne";
   public final static String CACHE_TWO = "cacheTwo";

   @Bean
   public Cache cacheOne() {
      return new GuavaCache(CACHE_ONE, CacheBuilder.newBuilder()
            .expireAfterWrite(60, TimeUnit.MINUTES)
            .build());
   }

   @Bean
   public Cache cacheTwo() {
      return new GuavaCache(CACHE_TWO, CacheBuilder.newBuilder()
            .expireAfterWrite(60, TimeUnit.SECONDS)
            .build());
   }
}

캐시 할 메소드에 주석 달기

@Cacheable 주석을 추가하고 캐시 이름을 전달하십시오.

@Service
public class CachedService extends WebServiceGatewaySupport implements CachedService {

    @Inject
    private RestTemplate restTemplate;


    @Cacheable(CacheConfig.CACHE_ONE)
    public String getCached() {

        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);

        HttpEntity<String> reqEntity = new HttpEntity<>("url", headers);

        ResponseEntity<String> response;

        String url = "url";
        response = restTemplate.exchange(
                url,
                HttpMethod.GET, reqEntity, String.class);

        return response.getBody();
    }
}

You can see a more complete example here with annotated screenshots: Guava Cache in Spring

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I use life hacking like this

@Configuration
@EnableCaching
@EnableScheduling
public class CachingConfig {
    public static final String GAMES = "GAMES";
    @Bean
    public CacheManager cacheManager() {
        ConcurrentMapCacheManager cacheManager = new ConcurrentMapCacheManager(GAMES);

        return cacheManager;
    }

@CacheEvict(allEntries = true, value = {GAMES})
@Scheduled(fixedDelay = 10 * 60 * 1000 ,  initialDelay = 500)
public void reportCacheEvict() {
    System.out.println("Flush Cache " + dateFormat.format(new Date()));
}

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Springboot 1.3.8

import java.util.concurrent.TimeUnit;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.guava.GuavaCacheManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.google.common.cache.CacheBuilder;

@Configuration
@EnableCaching
public class CacheConfig extends CachingConfigurerSupport {

@Override
@Bean
public CacheManager cacheManager() {
    GuavaCacheManager cacheManager = new GuavaCacheManager();
    return cacheManager;
}

@Bean
public CacheManager timeoutCacheManager() {
    GuavaCacheManager cacheManager = new GuavaCacheManager();
    CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder()
            .maximumSize(100)
            .expireAfterWrite(5, TimeUnit.SECONDS);
    cacheManager.setCacheBuilder(cacheBuilder);
    return cacheManager;
}

}

and

@Cacheable(value="A", cacheManager="timeoutCacheManager")
public Object getA(){
...
}

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this can be done by extending org.springframework.cache.interceptor.CacheInterceptor , and override "doPut" method - org.springframework.cache.interceptor.AbstractCacheInvoker your override logic should use the cache provider put method that knows to set TTL for cache entry (in my case I use HazelcastCacheManager)

@Autowired
@Qualifier(value = "cacheManager")
private CacheManager hazelcastCacheManager;

@Override
protected void doPut(Cache cache, Object key, Object result) {
        //super.doPut(cache, key, result); 
        HazelcastCacheManager hazelcastCacheManager = (HazelcastCacheManager) this.hazelcastCacheManager;
        HazelcastInstance hazelcastInstance = hazelcastCacheManager.getHazelcastInstance();
        IMap<Object, Object> map = hazelcastInstance.getMap("CacheName");
        //set time to leave 18000 secondes
        map.put(key, result, 18000, TimeUnit.SECONDS);



}

on your cache configuration you need to add those 2 bean methods , creating your custom interceptor instance .

@Bean
public CacheOperationSource cacheOperationSource() {
    return new AnnotationCacheOperationSource();
}


@Primary
@Bean
public CacheInterceptor cacheInterceptor() {
    CacheInterceptor interceptor = new MyCustomCacheInterceptor();
    interceptor.setCacheOperationSources(cacheOperationSource());    
    return interceptor;
}

This solution is good when you want to set the TTL on the entry level , and not globally on cache level

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Since Spring-boot 1.3.3, you may set expire time in CacheManager by using RedisCacheManager.setExpires or RedisCacheManager.setDefaultExpiration in CacheManagerCustomizer call-back bean.

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If you are working with redis and Java 8, you can take a look at JetCache:

@Cached(expire = 10, timeUnit = TimeUnit.MINUTES) User getUserById(long userId);

참고URL : https://stackoverflow.com/questions/8181768/can-i-set-a-ttl-for-cacheable