Subfolder Search

[zenith0212]

Hello, everyone.
I am using nextcloud server, and I need some features, such as sub folder search. So I decided to modify nextcloud server code, and found depth variable of nextcloud. So I set this variable -1 and it seems to behavior right. But I found that number of sql queries increased very highly. Through some research, I know nextcloud uses recursive search and every search runs some queries in subfolder search. This is too heavy.
Why doesn't nextcloud reduce the number of queries?
Please see lib/private/files/view.php and cache.php.
Here, nextcloud request and build some sql queries. I modified cache.php. So the number of queries is reduced. But one question.
Why doesn't nextcloud use this method?

[XueSheng-GIT]

I saw that @artonge is working on some optimizations in regards to search (e.g. #36701). Thus maybe related.

[joshtrichards]

I suspect because someone simply needs to get around to submitting a PR. Why don't you submit your initial changes as a PR and see where it evolves from there? :)