如何使用 hazelcast 在 spring 引导中配置多个缓存?

How to configure multiple cache in spring boot using hazelcast?

我是 Hazelcast 的新手。我正在尝试在我的 spring 引导应用程序中实施缓存。我已经使用两个地图配置(CacheObject 和 CacheList)为 hazlecast 创建了一个配置 class。我有两个方法 objectMethod() returns 单个员工对象和 listMethod() returns 员工对象列表。

我在 objectMethod 和 listMethod 上使用了@cacheable 注释。问题是只有对象缓存在工作,列表缓存不工作。当我 运行 程序处于调试模式时,对象缓存是 returns 值而不进入方法,但列表缓存总是执行方法并从数据库中获取值。

我是否缺少任何配置或其他任何东西?

我正在使用 Spring 引导版本 2.1.3.RELEASE、Hazelcast 版本 3.11.1 和 Hazelcast-spring 版本 3.11.1.

我尝试 spring 执行器缓存 url 查看缓存,但我只看到 CacheObject 而不是 CacheList。

http://localhost:8080/actuator/caches

{"cacheManagers":{"cacheManager":{"caches":{"CacheObject":{"target":"com.hazelcast.map.impl.proxy.MapProxyImpl"}}}}}

配置class

@Configuration
public class HazelcastCacheConfig {

    @Bean
    public Config cacheConfig() {
        return new Config().setInstanceName("hazelcast-instance")
                .addMapConfig(new MapConfig().setName("CacheObject")
                        .setMaxSizeConfig(new MaxSizeConfig(100, MaxSizeConfig.MaxSizePolicy.FREE_HEAP_SIZE))
                        .setEvictionPolicy(EvictionPolicy.LRU).setTimeToLiveSeconds(86400))
                .addMapConfig(new MapConfig().setName("CacheList")
                        .setMaxSizeConfig(new MaxSizeConfig(100, MaxSizeConfig.MaxSizePolicy.FREE_HEAP_SIZE))
                        .setEvictionPolicy(EvictionPolicy.LRU).setTimeToLiveSeconds(86400));
    }

@cacheable 注释

@Cacheable(value="CacheList")
    public List<Employee> getEmployeeList(String a, String b, String b){
        //Query
        return employeeList;

    }
@Cacheable(value="CacheObject")
    public Employee getEmployeeObject(String a, String b, String v) {

        //Query
         return employeeObject;
    }

员工class

public class Employee implements Serializable{

   private static final long serialVersionUID = 1L;
   private string a,
   private string b,
   private string c,
   private UUID d,
   private Map<String,String> e;
}

您是否以相同的方式使用两个缓存?如果您不使用代理对象(不要使用依赖注入),Cachable 将无法工作。

此外,您是如何配置缓存管理器的?

package test;

import static org.junit.Assert.assertEquals;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Repository;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

import com.hazelcast.core.Hazelcast;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.spring.cache.HazelcastCacheManager;
import com.hazelcast.test.TestHazelcastInstanceFactory;

@RunWith(SpringRunner.class)
@ContextConfiguration(
    classes= { CacheableTest.CacheConfig.class, CacheableTest.Repo.class }
    )
@EnableCaching
public class CacheableTest
{
  @Configuration
  public static class CacheConfig
  {
    @Bean
    public HazelcastInstance hzInstance() {
      return Hazelcast.newHazelcastInstance();
    }

    @Bean
    public CacheManager cacheManager(HazelcastInstance hzInstance) {
        return new HazelcastCacheManager(hzInstance);
    }
  }

  @Repository
  public static class Repo {

    public static int callCountA;
    public static int callCountB;

    @Cacheable("a")
    public String getA(String key) {
      ++callCountA;
      return key;
    }

    @Cacheable("b")
    public String getB(String key) {
      ++callCountB;
      return key;
    }

  }

  @Autowired
  public Repo repo;

  @Test
  public void test() {

    String key = "a";

    assertEquals(0, Repo.callCountA);
    System.out.println(repo.getA(key));
    System.out.println(repo.getA(key));
    assertEquals(1, Repo.callCountA);

    assertEquals(0, Repo.callCountB);
    System.out.println(repo.getB(key));
    System.out.println(repo.getB(key));
    assertEquals(1, Repo.callCountB);

  }
}