To make the example as simple as possible, only attributes are supported, not operations, and no database loading saving functions are implemented 为了让这个实例尽可能简单,我们只提供了对属性的支持,而没有实现操作和数据库的加载、保存功能。
It is very nice approach which means database never needs to “ stall ” to perform total modified pages flush but instead flushing of dirty pages happens gradually in small chunks so database load is very even 这种做法意味着数据库无需因为需要刷新所有的被修改的内存页而被“拖延”,它是把所有产生的脏内存页分成多个小块渐渐地刷新,这样负载就比较平均了。