springboot缓存的使用实践

<dependency> 
  <groupId>org.springframework.boot</groupId> 
  <artifactId>spring-boot-starter-cache</artifactId> 
</dependency> 

@Override 
  //@CachePut 该注解会将方法的返回值缓存起来,其中缓存名字是 people,数据的key是person的id 
  @CachePut(value = "people", key = "#person.id") 
  public Person save(Person person) { 
    Person p = personRepository.save(person); 
    System.out.println("为id、key为:"+p.getId()+"数据做了缓存"); 
    return p; 
  } 

@Override 
  //@CacheEvict 该注解会删除people缓存中key为id 的数据 
  @CacheEvict(value = "people", key = "#id") 
  public void remove(Long id) { 
    System.out.println("删除了id、key为"+id+"的数据缓存"); 
    //这里不做实际删除操作 
  }

@Override 
  //@Cacheable 该注解会在方法执行时，判断缓存people中key为#person.id 
的缓存是否存在,如果存在，则直接返回缓存中的数据。如果不存在，则会查数据库，然后将返回结果缓存起来。 
  @Cacheable(value = "people", key = "#person.id") 
  public Person findOne(Person person) { 
    Person p = personRepository.findOne(person.getId()); 
    System.out.println("为id、key为:"+p.getId()+"数据做了缓存"); 
    return p; 
  }

<dependency> 
  <groupId>org.springframework.boot</groupId> 
  <artifactId>spring-boot-starter-redis</artifactId> 
</dependency> 

redis.hostname=localhost 
redis.port=6379 

@Configuration 
public class RedisConfig extends CachingConfigurerSupport{ 
  private static final Logger logger = LoggerFactory.getLogger(RedisConfig.class); 
 
  @Autowired 
  private Environment env; 
 
  @Bean 
  public JedisConnectionFactory redisConnectionFactory() { 
    JedisConnectionFactory redisConnectionFactory = new JedisConnectionFactory(); 
    redisConnectionFactory.setHostName(env.getProperty("redis.hostname")); 
    redisConnectionFactory.setPort(Integer.parseInt(env.getProperty("redis.port"))); 
    return redisConnectionFactory; 
  } 
 
  @Bean 
  public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory cf) { 
    RedisTemplate<String, String> redisTemplate = new RedisTemplate<>(); 
    redisTemplate.setConnectionFactory(cf); 
    return redisTemplate; 
  } 
 
  @Bean 
  public CacheManager cacheManager(RedisTemplate<?, ?> redisTemplate) { 
    RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate); 
    cacheManager.setDefaultExpiration(600); 
    return cacheManager; 
  } 
   
}