该源码给出了一个插入大数据量（超过4000条记录）的示范例子。一般而言，超过了4000条，用一般方法是没有办法的，必须特殊处理。-the source is inserted into a large volume of data (more than 4,000 records) model example. Generally, more than 4,000, with the general approach is not the way to be treated specially.