News for hackers. Stuff that matters.
Re:PostgreSQL 9.6 Released by joshberkus on Monday October 03, 2016 @06:43PM (#12631972)
You'll be interested in ongoing work in this area, then. Oleg & Teodor are working on a new index type (RUM indexes, no less) which will speed up ranking operations conserably.

https://lwn.net/Articles/689387/

Re:PostgreSQL 9.6 Released by ngrilly on Tuesday October 04, 2016 @02:44PM (#12638119)
Hi Josh. Yes, I'm aware of this new type of index. Oleg was even kind enough to answer my email asking a few question about it :-)