Redis：Spring Boot使用@Cacheable时设置部分缓存的过期时间_cacheable 保存时长

@Override
@Cacheable(cacheNames = {"distributor"}, key = "key1")
public List<CityVO> findCities() {
    return distributorMapper.selectCities();
} 

@Override
@Cacheable(cacheNames = {"car"}, key = "key2")
public List<CityVO> findCities() {
    return distributorMapper.selectCities();
} 

自定义缓存时间

distributor：：key1 的有效期是永久的

car：：key2 的有效期是6分钟

@Slf4j
@Configuration
@EnableCaching //启用缓存
public class RedisConfig {
	
	/**
	 * 自定义缓存管理器
	 */
	@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)));//有效期6分钟
		configMap.put("distributor", config);//永久
		
		//需要先初始化缓存名称，再初始化其它的配置。
		RedisCacheManager cacheManager = RedisCacheManager.builder(factory).initialCacheNames(cacheNames).withInitialCacheConfigurations(configMap).build();
 
		return cacheManager;
	}
}