redis 做默认缓存（1）

 

 

依赖：

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

 

 

 

 

 

 

配置：

server.port=9999
# REDIS (RedisProperties)
# Redis\u6570\u636E\u5E93\u7D22\u5F15\uFF08\u9ED8\u8BA4\u4E3A0\uFF09
spring.redis.database=0  
# Redis\u670D\u52A1\u5668\u5730\u5740
spring.redis.host=127.0.0.1
# Redis\u670D\u52A1\u5668\u8FDE\u63A5\u7AEF\u53E3
spring.redis.port=6379  
# Redis\u670D\u52A1\u5668\u8FDE\u63A5\u5BC6\u7801\uFF08\u9ED8\u8BA4\u4E3A\u7A7A\uFF09
spring.redis.password=  
# \u8FDE\u63A5\u6C60\u6700\u5927\u8FDE\u63A5\u6570\uFF08\u4F7F\u7528\u8D1F\u503C\u8868\u793A\u6CA1\u6709\u9650\u5236\uFF09
spring.redis.pool.max-active=8  
# \u8FDE\u63A5\u6C60\u6700\u5927\u963B\u585E\u7B49\u5F85\u65F6\u95F4\uFF08\u4F7F\u7528\u8D1F\u503C\u8868\u793A\u6CA1\u6709\u9650\u5236\uFF09
spring.redis.pool.max-wait=-1  
# \u8FDE\u63A5\u6C60\u4E2D\u7684\u6700\u5927\u7A7A\u95F2\u8FDE\u63A5
spring.redis.pool.max-idle=8  
# \u8FDE\u63A5\u6C60\u4E2D\u7684\u6700\u5C0F\u7A7A\u95F2\u8FDE\u63A5
spring.redis.pool.min-idle=0  
# \u8FDE\u63A5\u8D85\u65F6\u65F6\u95F4\uFF08\u6BEB\u79D2\uFF09
spring.redis.timeout=0 

 

 

 

 **************************************************************************
 */
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    @Bean
    public CacheManager cacheManager(RedisTemplate<Object, Object> redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        cacheManager.setDefaultExpiration(10);
        return cacheManager;
    }
    
    
    
    
    
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory connectionFactory) {
       RedisTemplate<Object, Object> template = new RedisTemplate<>();
       template.setConnectionFactory(connectionFactory);
       //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值
       Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
       ObjectMapper mapper = new ObjectMapper();
       mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
       serializer.setObjectMapper(mapper);
       template.setValueSerializer(serializer);
       
       template.setKeySerializer(new JdkSerializationRedisSerializer());
       template.afterPropertiesSet();
       return template;
    }
}

 

 

使用：

    @Cacheable(cacheNames = {"cacheManager"}, cacheManager = "cacheManager")
    public String getvalue(){
        
        System.err.println("hahhhahahaahhahahahahahahahahahahahahahahahah");
        System.err.println("hahhhahahaahhahahahahahahahahahahahahahahahah");
        System.err.println("hahhhahahaahhahahahahahahahahahahahahahahahah");
        System.err.println("hahhhahahaahhahahahahahahahahahahahahahahahah");
        String aa="nihao ";
        return aa;
    }
    

 

    关于可以的生成策略,看这个 https://www.cnblogs.com/lshan/p/10138967.html

•  
  @Cacheable(value="users", key="#id")
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  public User find(Integer id) {
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  returnnull;
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  }