Thanks! I wall implement this and test to see the results, in performance. I'll try to post the results here for the information of all. Thanks again, i'm thinking that Objectify is not a good idea for this, so i will have to rewrite dome things.
2011/7/27 Ernesto Oltra <ernestoka...@gmail.com> > I thought one thing and I said something completely differente -.-' I meant > having a model, with the same key_id/key_name as the post and a list of > users (say 4000/4500). When that super-start with 200.000 followers post > something, run a taskqueue and save several models with the info. Then, for > listing, do a key-only query where the user is in the list of affected ones. > Then, with the keys, obtaing the posts (they have the same key_id/key_name). > A cron job will delete old notifications. > > Most of users will have less than 700/800 followers (if it's something like > Twitter), so they will consume only one notification model per post. And the > costs come from indexes (a lot of lists to index), serialization (4000/4500 > items), deserialization (we use it with keys, so almost no cost), deleting > old notifications (we use keys too) > > Anyway, I'm willing to hear new ideas, surely they can largely improve my > system > > Ernesto > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/google-appengine/-/fC_ZvMvF6MoJ. > > To post to this group, send email to google-appengine@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
