Caching 缓存消息源

对于消息源实现的每次调用，我希望在调用远程服务器之前进行缓存

这是伪代码

@Configuration
public class ConfigurationForMessageSource {

    @Bean
    public MessageSource messageSource() {

        return new AbstractMessageSource() {

            @Autowired
            RemoteMessageSource remoteMessageSource;

            @Override
            protected MessageFormat resolveCode(String code, Locale locale) {

                String message = remoteMessageSource.translate(code);

                return createMessageFormat(message, locale);
            }
        };
    }
}

服务实现

@Service
public class RemoteMessageSource {

    @Cacheable(value = "message", key = "#code")
    public String translate(String code) {

        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            throw new IllegalStateException(e);
        }

        return dataBase.get(code);
    }
}

github提供了完整的实现：