On Mon, 11 Aug 2014 07:07:17 -0400 chas williams - CONTRACTOR <c...@cmf.nrl.navy.mil> wrote:
> Before I go ahead and actually write something again how about a > consensus on where this negative cache should be? I don't think the > dnlc currently supports caching negative information (the comments say > that anyway) but that shouldn't be too hard to fix. Caching negative > entries in afsd would be easier of course. I expected this to be cached as a 'struct cell' in libafs. We already cache that information in the global list of cells, and fallback to an afsdb query if we can't find one. So instead, to have a negative cache entry add a flag or some other indicator to the structure that says "this cell doesn't exist". Either a magic cell number or a 'states' flag or something. Doing that with the existing lookup logic might not be great, though... it would be better if the cell lookup routines used a hash table or something. That would be good to do anyway, but caching negative entries I think makes it more required. -- Andrew Deason adea...@sinenomine.net _______________________________________________ OpenAFS-devel mailing list OpenAFS-devel@openafs.org https://lists.openafs.org/mailman/listinfo/openafs-devel
