Thank you for the comments, Andrew -
On Mon, Jan 7, 2019 at 8:40 PM Andrew Gierth <andrew@xxxxxxxxxxxxxxxxxxxx> 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