[ccache] Cache directory tagging proposal

mbp at sourcefrog.net mbp at sourcefrog.net
Tue Jul 27 14:01:27 GMT 2004

On 25 Jul 2004, Bryan Ford <baford at mit.edu> wrote:
> Dear ccache folks,
> I'm not familiar with ccache (though it looks great!) - but I was pointed to 
> it as one application that creates and manages an on-disk cache typically 
> located in the user's home directory.  I'd like to inquire if you'd be 
> willing to support a trivial convention I'm proposing by which cache-managing 
> applications can tag their caches in a standard and recognizable way, so that 
> backup and archival software can easily be configured to exclude uselessly 
> backing up such regenerable data.  (This would be especially useful with 
> ccache, since I understand that ccache caches can be pretty big. :))  All 
> that ccache would have to do is write into its cache directory a file named 
> ".IsCacheDirectory", containing a specific fixed header - probably a 5- or 
> 10-line change to ccache.  The full (but short) proposal is at:
> http://www.brynosaurus.com/cachedir
> ...and the main discussion of the proposal is occurring on the xdg-list on 
> freedesktop.org. The Mozilla folks are already on board and receptive to the 
> idea, which is obviously critical since Mozilla caches probably represent the 
> bulk of uselessly backed-up cached content on free desktop systems - but I'd 
> of course like to get the support of a wider variety of applications. 
> Comments and discussion (privately or on the xdg-list) are of course welcome.

That looks good to me.  I'm not the maintainer of ccache though.

It would be nice to add support into rdiff-backups as well.

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