[dolphin] [Bug 436501] New: Cache mechanism in Dolphin is making it completely unreliable.

[Leinier Cruz Salfran]

https://bugs.kde.org/show_bug.cgi?id=436501

            Bug ID: 436501
           Summary: Cache mechanism in Dolphin is making it completely
                    unreliable.
           Product: dolphin
           Version: 20.12.0
          Platform: FreeBSD Ports
                OS: FreeBSD
            Status: REPORTED
          Severity: critical
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: leiniercs at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY

Hello Dolphin developers. You're doing a great work with Dolphin, I really like
the user interface and the possibilities it gives me, besides it is the
intrinsic files explorer of the desktop environment, so it is interconnected
with other stuff of the ecosystem. But, and here I go, there is something that
is making Dolphin completely unreliable and it is happening from some years ago
when I detected for the first time a problem with a transfer of files I made. I
didn't reported it at the time but now.

The source of that bad behavior is the "cache" system you've implemented in it.

Please, let me tell you that the "cache system" is badly coded (100%) and it is
causing problems with the visualization and transfer of files between locations
and visualization of disk information like free space, among other things I'm
pretty sure it is happening, but I didn't see them yet. I've lost files because
of wrong copies (files not copied) and about a week ago my cousin reported to
me that he didn't find some music files he had in the flash memory he gave me
to make an organizational operation (he had a lot of musics on the root
directory and he wanted me to put those musics into several directories). The
last bad thing I detected was on Apr-30-2021:
- I copied a first SVG image from one location to another.
- Dolphin showed me the preview of the first image correctly.
- I found a second image I liked more.
- I deleted the first image from the destination location.
- I transferred the second image to the destination location.
- Dolphin showed me the preview of the second image correctly.
- I changed the name of the second image to the name of the first image.
- The problem: Dolphin showed me the image of the first image instead of the
second.

Dolphin is a critical piece of the KDE Desktop Environment. It job is to work
directly with files and directories, those who are important to everybody, so,
it have to do it work completely well and beyond (200%). Do you imagine that
you loss some important files of a project of yours because Dolphin didn't
copied them correctly to the backup device, or you loss your favorites music
and films, or you get embarrassed in your school or work when it is your turn
to do a presentation in front of an auditorium and the "thing" doesn't work
because of the lack of files in the memory flash? That must not happen never.

I have a proposal and it would be great if you all take it very seriously:

- Eliminate completely the cache system in Dolphin and make Dolphin do the work
it need every time it need to do it.

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