code: public static void useAsDataTransfer(Dialect dialect, IContainerFactory containerFactory) {
  		useAsDataTransfer(dialect, containerFactory, new com.jfinal.plugin.activerecord.cache.EhCache());
  	}
docs: 分布式场景下指定 Dialect、IContainerFactory，并默认使用 EhCache
  @see #useAsDataTransfer(Dialect, IContainerFactory, ICache)