I see everywhere that heroku deletes changes you made to the filesystem once you deploy or scale your application but in my case it seems files disappear immediately.
My rails application uploads files to public/uploads and then a delayed job tries to read those files, when it tries to read them they are not found.
If I do everything in the same thread it works, but when I try to use the delayed job or check the filesystem using heroku run bash the files are gone.
Why this happens?