SpringBootHazelcastCaching使用和配置详解

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  4.0.0

  com.zzf
  spring-boot-hazelcast
  1.0-SNAPSHOT

  
    org.springframework.boot
    spring-boot-starter-parent
    2.0.1.RELEASE
  

  

    
    
      org.springframework.boot
      spring-boot-starter-cache
    
    
      org.springframework.boot
      spring-boot-starter-actuator
    
    
      org.springframework.boot
      spring-boot-starter-web
    

    
    
      com.hazelcast
      hazelcast-all
      3.10.1
    
  

  
    
      
        org.springframework.boot
        spring-boot-maven-plugin
      
    
  

@Service
@CacheConfig(cacheNames = "instruments")
public class MusicService {

  private static Logger log = LoggerFactory.getLogger(MusicService.class);
  @CacheEvict(allEntries = true)
  public void clearCache(){}

  // 表示的是属性为 trombone 就进行缓存
  @Cacheable(cOndition= "#instrument.equals('trombone')")
  public String play(String instrument){

    log.info("Executing: " + this.getClass().getSimpleName() + ".play(\"" + instrument + "\");");
    return "playing " + instrument + "!";
  }
}

@Configuration
public class HazelcastConfiguration {
  @Bean
  public Config hazelcastConfig(){
    return new Config().setInstanceName("hazelcast-instance")
        .addMapConfig(
              new MapConfig()
                  .setName("instruments")
                  .setMaxSizeConfig(new MaxSizeConfig(200, MaxSizeConfig.MaxSizePolicy.FREE_HEAP_SIZE))
                  .setEvictionPolicy(EvictionPolicy.LRU)
                  .setTimeToLiveSeconds(20)
        );
  }
}

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# application.yml
spring:
 hazelcast:
  config: classpath:config/hazelcast.xml

# application.properties
spring.hazelcast.cOnfig=classpath:config/hazelcast.xml

@Controller
public class HazelcastController {

  private Logger logger = LoggerFactory.getLogger(HazelcastController.class);

  @Autowired
  private MusicService musicService;

  @Autowired
  private CacheManager cacheManager;

  @RequestMapping("/hezelcast")
  @ResponseBody
  public void getHazelcast(){

    logger.info("Spring Boot Hazelcast Caching Example Configuration");
    logger.info("Using cache manager: " + cacheManager.getClass().getName());

    // 清空缓存
    musicService.clearCache();

    // 调用方法
    play("trombone");
    play("guitar");

    play("trombone");
    play("guitar");

    play("bass");
    play("trombone");
  }

  private void play(String instrument){
    logger.info("Calling: " + MusicService.class.getSimpleName() + ".play(\"" + instrument + "\");");
    musicService.play(instrument);
  }
}

@EnableCaching
@SpringBootApplication
public class HazelcastApplication{

  private Logger logger = LoggerFactory.getLogger(HazelcastApplication.class);

  public static void main(String[] args) {
    SpringApplication.run(HazelcastApplication.class, args);
  }
}