mirror of
https://github.com/LemmyNet/lemmy.git
synced 2024-11-25 15:39:11 +00:00
7a97fc370b
- Added more indexes to account for sorting by stickied first. - Changed all order bys in the diesel views to use post_aggregates.
50 lines
2.2 KiB
PL/PgSQL
50 lines
2.2 KiB
PL/PgSQL
-- Need to add immutable to the hot_rank function in order to index by it
|
|
|
|
-- Rank = ScaleFactor * sign(Score) * log(1 + abs(Score)) / (Time + 2)^Gravity
|
|
create or replace function hot_rank(
|
|
score numeric,
|
|
published timestamp without time zone)
|
|
returns integer as $$
|
|
begin
|
|
-- hours_diff:=EXTRACT(EPOCH FROM (timezone('utc',now()) - published))/3600
|
|
return floor(10000*log(greatest(1,score+3)) / power(((EXTRACT(EPOCH FROM (timezone('utc',now()) - published))/3600) + 2), 1.8))::integer;
|
|
end; $$
|
|
LANGUAGE plpgsql
|
|
IMMUTABLE;
|
|
|
|
-- Post_aggregates
|
|
create index idx_post_aggregates_stickied_hot on post_aggregates (stickied desc, hot_rank(score, published) desc, published desc);
|
|
create index idx_post_aggregates_hot on post_aggregates (hot_rank(score, published) desc, published desc);
|
|
|
|
create index idx_post_aggregates_stickied_active on post_aggregates (stickied desc, hot_rank(score, newest_comment_time) desc, newest_comment_time desc);
|
|
create index idx_post_aggregates_active on post_aggregates (hot_rank(score, newest_comment_time) desc, newest_comment_time desc);
|
|
|
|
create index idx_post_aggregates_stickied_score on post_aggregates (stickied desc, score desc);
|
|
create index idx_post_aggregates_score on post_aggregates (score desc);
|
|
|
|
create index idx_post_aggregates_stickied_published on post_aggregates (stickied desc, published desc);
|
|
create index idx_post_aggregates_published on post_aggregates (published desc);
|
|
|
|
-- Comment
|
|
create index idx_comment_published on comment (published desc);
|
|
|
|
-- Comment_aggregates
|
|
create index idx_comment_aggregates_hot on comment_aggregates (hot_rank(score, published) desc, published desc);
|
|
create index idx_comment_aggregates_score on comment_aggregates (score desc);
|
|
|
|
-- User
|
|
create index idx_user_published on user_ (published desc);
|
|
|
|
-- User_aggregates
|
|
create index idx_user_aggregates_comment_score on user_aggregates (comment_score desc);
|
|
|
|
-- Community
|
|
create index idx_community_published on community (published desc);
|
|
|
|
-- Community_aggregates
|
|
create index idx_community_aggregates_hot on community_aggregates (hot_rank(subscribers, published) desc, published desc);
|
|
create index idx_community_aggregates_subscribers on community_aggregates (subscribers desc);
|
|
|
|
|
|
|