Q2. Does the system have the refresh cache?

For example, the page interface will not stay in the previous interface after refreshing.

Currently, the page itself does not have any refresh cache function or strategy. It just loads the page again according to the route of the page address.

In the screenshot, only the first and second level menus have routes, so they can be maintained after refreshing. The left tree of the third level has no route, so this kind of refresh will not be maintained.