Ignore that the data is incomplete because the close() method was not called last time, and this start directly uses the last data.

[wang821416]

My usage scenario is that I hope to persist data to the disk regularly. If the close() method was not executed when the project was unexpectedly closed last time, the data incompleteness of the last time was ignored in this startup, and the existing data was used instead of clearing the cache data. How to use it?