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Qu'est-ce que the Windows Projected Fichier System?

ayi

In the latest builds of Windows 10, there is a new feature, in Beta, called Windows Projected File System. I cannot find any information on Google, other than programming APIs that do not make sense to me.
Qu’est-ce que it, and what kind of users would it be targeted for?

ayi_2

Projected File System aka ProjFS is a feature similar to FUSE found on Linux (or to Dokan & WinFSP). It allows apps to create virtual système de fichierss which appear indistinguishable from local folders, but their entire contents are generated “live” by the program. (Autrement dit, you’re seeing projections of files which might not be there.)
The primary use of ProjFS is Microsoft’s “<a href="https://vfsforgit.org/">Git Virtual File System</a>”, an addon to the Git version management tool aimed at increasing its performance and reducing espace disque usage when dealing with massive repositories. (Git was built for repositories containing just tens of thousands of files, such as Linux.git; but Microsoft have started using it internally for the Windows source repository, which is several orders of magnitude larger.)
De plus, Visual Studio (Enterprise)'s “Live Unit Testing” feature requires ProjFS <a href="https://learn.microsoft.com/en-us/windows/win32/projfs/enabling-windows-projected-file-system">to be enabled</a>
Currently ProjFS doesn’t seem to be publicly documented, but I expect that sooner or later third-party developers will figure out how to use it as a FUSE alternative for implementing such virtual filesystems as sshfs, ftpfs, and so on.
Remarque : Projected File System has nothing to do with Windows File Protection.
As noted in the comments, <a href="https://docs.microsoft.com/en-us/windows/win32/projfs/projected-file-system">documentation</a> is now available for the feature.