在redis里創建一個文件夾的示例：
使用spring在redis的緩存中創建文件夾，代碼：
@Cacheable(value = "displayItem", cacheManager = "longLifeCacheManager")
public DisplayItem getDisplayItem(String displayItemCode) {
// Do a lot of things
}
@Cacheable(cacheManager = "mediumLifeCacheManager", value = "preferences:userPreferences", key = "#zenithName")
public UserPreferences getUserPreferencesByZenithName(String zenithName) {
// Do something
}
