Joel Rosdahl wrote: >> If not, would be a good idea to implement that? > > I think that it could be interesting to investigate, but there are lots of > things to think about before implementing it. For instance: > > What should happen on a cache miss? Should ccache store the result in all > directories? That could potentially be quite slow. Or should it only store > the result in the first directory? If so, when and how do the other > directories get populated?
The way it happens with memcached, is that the writing is offloaded to a background daemon. So it is handled locally, and "transparently" remote. There was also an option to not store anything in the cache, only read ? This is useful when you have for instance a CI build server populating. > How should configuration file settings work? Should configuration be read > only from one cache directory or from all? The way that I looked at it, there was only configuration in the local. Basically we still have most configuration in environment variables... > Cache size configuration probably would need to be configured per cache > directory. Does this imply that CCACHE_MAXSIZE variable no longer should > override configuration file settings? There was *no* cleaning of the remote. We had some "incidents", when all clients started to inventory and clean the shared cache - at once! The server would do it's own cleaning (using something like cron ?), or just drop old records - this is what memcached does for instance. > Which statistics counters would make sense to have in all cache directories > (cache hit/miss, etc.) and which would not make sense (called for link, > compile failed, etc.)? Currently memcached keep its own statistics. Simplistic NFS/HTTP stores would probably have to implement something similar, for hit and miss ? I'm not sure that the "external" store (as I called them) would need to use the same list of statistics as the regular "internal" store. /Anders _______________________________________________ ccache mailing list firstname.lastname@example.org https://lists.samba.org/mailman/listinfo/ccache