使用Spring Cache实现多个缓存实现

Question

我正在开发一个Spring Boot应用程序,我需要使用分布式(例如Hazelcast)和本地(例如Guava)缓存.有没有办法配置Spring Cache在使用时使用它们@Cacheable并根据缓存名称决定需要哪个实现？

我尝试为HZ和Guava创建一个配置来定义里面的缓存名称,但是Spring抱怨它无法找到应该由HZ处理的缓存名称.当我独家使用HZ或Guava时,它们起作用.

Answer 1

根据缓存名称需要哪种实现？

不是基于缓存名称,而是基于CacheManager的可能,请将其中一个声明为Primary CacheManager,如下所示:

@Configuration
@EnableCaching
@PropertySource(value = { "classpath:/cache.properties" })
public class CacheConfig {

    @Bean
    @Primary
    public CacheManager hazelcastCacheManager() {
        ClientConfig config = new ClientConfig();
        HazelcastInstance client = HazelcastClient.newHazelcastClient(config);
        return new HazelcastCacheManager(client);
    }

    @Bean
    public CacheManager guavaCacheManager() {
         GuavaCacheManager cacheManager = new GuavaCacheManager("mycache");
           CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder()
           .maximumSize(100)
           .expireAfterWrite(10, TimeUnit.MINUTES);
           cacheManager.setCacheBuilder(cacheBuilder);
           return cacheManager;
    }

}

并在课程级别指定为:

@Service
@CacheConfig(cacheManager="hazelcastCacheManager")
public class EmployeeServiceImpl implements IEmployeeService {

}

或者在方法级别:

@Service
public class EmployeeServiceImpl implements IEmployeeService {

    @Override
    @Cacheable(value = "EMPLOYEE_", key = "#id", cacheManager= "guavaCacheManager")
    public Employee getEmployee(int id) {
        return new Employee(id, "A");
    }

}

如果您必须坚持使用Cache名称,那么您可以使用多个CacheManager.