On Tue, Apr 29, 2014 at 10:01:49AM -0600, Kevin Fenzi wrote: > On Tue, 29 Apr 2014 07:28:30 +0200 > Pierre-Yves Chibon <pingou@xxxxxxxxxxxx> wrote: > > > On Thu, Apr 17, 2014 at 10:28:37PM +0200, Pierre-Yves Chibon wrote: > > > On Thu, Apr 17, 2014 at 08:48:00PM +0200, Michael scherer wrote: > > > > On Thu, Apr 17, 2014 at 10:19:02AM -0600, Kevin Fenzi wrote: > > > > > The first patch here looks fine to me... but the second one > > > > > isn't going to work I don't think. > > > > > > > > > > Those services use memcached, but they use our existing > > > > > memcached03/04 instances that are still in puppet, not local > > > > > memcached. > > > > > > > > Not all. > > > > Nuancier seems to use localhost : > > > > http://infrastructure.fedoraproject.org/cgit/ansible.git/tree/roles/nuancier/templates/nuancier.cfg#n52 > > > > > > > > So does pkgdb : > > > > http://infrastructure.fedoraproject.org/cgit/ansible.git/tree/roles/pkgdb2/templates/pkgdb2.cfg#n28 > > > > > > > > ( unless i missed something and pkgdb2 and nuancier run on a > > > > memcache server ) > > > > > > Nuancier and pkgdb2 could be moved, it's just a matter of adjusting > > > the configuration file. > > > pkgdb2 has memcache but iirc, it doesn't do much with it. I tried > > > to speed up some of the API calls with it but it wasn't really a > > > clear win, so I'm not sure it actually uses memcache at this time. > > > > I correct myself, pkgdb2 still uses memcache for its integration with > > FAS. > > So, I was kind of wondering if we should have some kind of best > practice around memcache or guidelines for Fedora Infrastructure > applications. > > a) When should you use memcache? > > b) When should it be external host vs local? > > c) How large should it be? > > I think my wild ass non application developer answers would be: > > a) When it's easy to integrate and you have things that would speed up > by using it. > > b) It should be external when you have more than 1 server running the > same application (so they can share cache?) > > c) no idea on this one. ;) My opinion is close to yours on most points: a) where it makes sense (speed things up, data that can spare being 59 minutes old...) b) I guess external makes sense since we keep having 2 production instances, but I'll have to figure out how to configure it properly then c) No idea either :) Pierre
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