Thank you for the comments, Andrew - On Mon, Jan 7, 2019 at 8:40 PM Andrew Gierth <and...@tao11.riddles.org.uk> wrote:
> The obvious thing to do is to keep a computed average score for each > user - either in a separate table which you update based on changes to > words_moves, which you could do with a trigger, or using a materialized > view which you refresh at suitable intervals (this has the drawback that > the data will not be immediately up-to-date). > > Combining these two changes should get you to under 100ms, maybe. > > I was considering creating a cronjob, but now I will better create a trigger as you have suggested Regards Alex