@Override
@Cacheable(cacheNames = {"distributor"}, key = "#root.methodName")
public List<CityVO> findCities() {
 return distributorMapper.selectCities();
}
@Override
@Cacheable(cacheNames = {"distributor"}, key = "#root.methodName.concat('#cityId').concat(#cityId)")
public List<DistributorVO> findDistributorsByCityId(String cityId) {
 return distributorMapper.selectByCityId(cityId);
}

@Override
@Cacheable(cacheNames = {"car"}, key = "#root.methodName.concat('#cityId').concat(#cityId)")
public String carList(String cityId) {
 RequestData data = new RequestData();
 data.setCityId(cityId);
 
 CarListParam param = new CarListParam();
 param.setRequestData(data);
 
 String jsonParam = JSON.toJSONString(param);
 return HttpClientUtil.sendPostWithJson(ApiUrlConst.MULE_APP, jsonParam);
}

@Slf4j
@Configuration
@EnableCaching //啟用緩存
public class RedisConfig {
 
 /**
  * 自定義緩存管理器
  */
 @Bean
 public RedisCacheManager cacheManager(RedisConnectionFactory factory) {
  RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
  Set<String> cacheNames = new HashSet<>();
  cacheNames.add("car");
  cacheNames.add("distributor");
  ConcurrentHashMap<String, RedisCacheConfiguration> configMap = new ConcurrentHashMap<>();
  configMap.put("car", config.entryTtl(Duration.ofMinutes(6L)));
  configMap.put("distributor", config);
  
  //需要先初始化緩存名稱(chēng)，再初始化其它的配置。
  RedisCacheManager cacheManager = RedisCacheManager.builder(factory).initialCacheNames(cacheNames).withInitialCacheConfigurations(configMap).build();
  return cacheManager;
 }
}

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-pool2</artifactId>
</dependency>

#  redis配置
spring:
    redis:
      database: 0
      host: 127.0.0.1
      password: 123456
      port: 6379
      timeout:  5000
      lettuce:
        pool:
          max-active: 300
          max-wait: -1
          max-idle: 20
          min-idle: 10

//return new RedisCacheManager(redisCacheWriter, redisCacheConfiguration);
return new CustomRedisCacheManager(redisCacheWriter, redisCacheConfiguration);

@Configuration
public class RedisConfig {
    
    /*
     * @description redis序列化方式
     * @author xianping
     * @date 2020/9/25
     * @param redisConnectionFactory
     * @return RedisTemplate
     **/
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }
    /*
     * @description Redis緩存的序列化方式使用redisTemplate.getValueSerializer()，不在使用JDK默認(rèn)的序列化方式
     * @author xianping
     * @date 2020/9/25
     * @param redisTemplate
     * @return RedisCacheManager
     **/
    @Bean
    public RedisCacheManager redisCacheManager(RedisTemplate redisTemplate) {
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisTemplate.getConnectionFactory());
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()               
        .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(redisTemplate.getValueSerializer()));
        //return new RedisCacheManager(redisCacheWriter, redisCacheConfiguration);
        return new CustomRedisCacheManager(redisCacheWriter, redisCacheConfiguration);
    }
}

//cacheConfig.entryTtl 設(shè)置緩存過(guò)期時(shí)間
public RedisCacheConfiguration entryTtl(Duration ttl) {
    Assert.notNull(ttl, "TTL duration must not be null!");
    return new RedisCacheConfiguration(ttl, this.cacheNullValues, this.usePrefix,    this.keyPrefix, this.keySerializationPair, this.valueSerializationPair,     this.conversionService);
}

//Duration.ofMinutes 持續(xù)時(shí)間
//這里默認(rèn)是以分鐘為單位，所以調(diào)用ofMinutes靜態(tài)方法進(jìn)行轉(zhuǎn)換
public static Duration ofMinutes(long minutes) {
        return create(Math.multiplyExact(minutes, SECONDS_PER_MINUTE), 0);
}

public class CustomRedisCacheManager extends RedisCacheManager {
    /*
     * @description 提供默認(rèn)構(gòu)造器
     * @author xianping
     * @date 2020/9/28 9:22
     * @param
     * @param cacheWriter
     * @param defaultCacheConfiguration
     * @return
     **/
    public CustomRedisCacheManager(RedisCacheWriter cacheWriter, RedisCacheConfiguration defaultCacheConfiguration) {
        super(cacheWriter, defaultCacheConfiguration);
    }
    /*
     * @description 重寫(xiě)父類(lèi)createRedisCache方法
     * @author xianping
     * @date 2020/9/28 9:22
     * @param
     * @param name @Cacheable中的value
     * @param cacheConfig
     * @return org.springframework.data.redis.cache.RedisCache
     **/
    @Override
    protected RedisCache createRedisCache(String name, RedisCacheConfiguration cacheConfig) {
        //名稱(chēng)中存在#標(biāo)記進(jìn)行到期時(shí)間配置
        if (!name.isEmpty() && name.contains("#")) {
            String[] SPEL = name.split("#");
            if (StringUtils.isNumeric(SPEL[1])) {
                //配置緩存到期時(shí)間
                int cycle = Integer.parseInt(SPEL[1]);
                return super.createRedisCache(SPEL[0], cacheConfig.entryTtl(Duration.ofMinutes(cycle * 24 * 60)));
            }
        }
        return super.createRedisCache(name, cacheConfig);
    }
}

@Cacheable(value = "cacheTest#1")
public String cacheTest() {
    return "cacheTest";
}

@Cacheable(value = "cacheTest")
public String cacheTest() {
    return "cacheTest";
}