A first pass at using materialized views.

This commit is contained in:
Dessalines 2020-01-13 20:02:02 -05:00
parent e5a3dc04bf
commit 8f32b84b5a
12 changed files with 1333 additions and 32 deletions

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server/.gitignore vendored
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.idea
env_setup.sh
query_testing/*.json
query_testing/*.json.old

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-- functions and triggers
drop trigger refresh_user on user_;
drop function refresh_user();
drop trigger refresh_post on post;
drop function refresh_post();
drop trigger refresh_post_like on post_like;
drop function refresh_post_like();
drop trigger refresh_community on community;
drop function refresh_community();
drop trigger refresh_community_follower on community_follower;
drop function refresh_community_follower();
drop trigger refresh_community_user_ban on community_user_ban;
drop function refresh_community_user_ban();
drop trigger refresh_comment on comment;
drop function refresh_comment();
drop trigger refresh_comment_like on comment_like;
drop function refresh_comment_like();
-- post
-- Recreate the view
drop view post_view;
create view post_view as
with all_post as
(
select
p.*,
(select u.banned from user_ u where p.creator_id = u.id) as banned,
(select cb.id::bool from community_user_ban cb where p.creator_id = cb.user_id and p.community_id = cb.community_id) as banned_from_community,
(select name from user_ where p.creator_id = user_.id) as creator_name,
(select avatar from user_ where p.creator_id = user_.id) as creator_avatar,
(select name from community where p.community_id = community.id) as community_name,
(select removed from community c where p.community_id = c.id) as community_removed,
(select deleted from community c where p.community_id = c.id) as community_deleted,
(select nsfw from community c where p.community_id = c.id) as community_nsfw,
(select count(*) from comment where comment.post_id = p.id) as number_of_comments,
coalesce(sum(pl.score), 0) as score,
count (case when pl.score = 1 then 1 else null end) as upvotes,
count (case when pl.score = -1 then 1 else null end) as downvotes,
hot_rank(coalesce(sum(pl.score) , 0), p.published) as hot_rank
from post p
left join post_like pl on p.id = pl.post_id
group by p.id
)
select
ap.*,
u.id as user_id,
coalesce(pl.score, 0) as my_vote,
(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
from user_ u
cross join all_post ap
left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
union all
select
ap.*,
null as user_id,
null as my_vote,
null as subscribed,
null as read,
null as saved
from all_post ap
;
drop view post_mview;
drop materialized view post_aggregates_mview;
drop view post_aggregates_view;
-- user
drop materialized view user_mview;
drop view user_view;
create view user_view as
select id,
name,
avatar,
email,
fedi_name,
admin,
banned,
show_avatars,
send_notifications_to_email,
published,
(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
from user_ u;
-- community
drop view community_mview;
drop materialized view community_aggregates_mview;
drop view community_view;
drop view community_aggregates_view;
create view community_view as
with all_community as
(
select *,
(select name from user_ u where c.creator_id = u.id) as creator_name,
(select avatar from user_ u where c.creator_id = u.id) as creator_avatar,
(select name from category ct where c.category_id = ct.id) as category_name,
(select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers,
(select count(*) from post p where p.community_id = c.id) as number_of_posts,
(select count(*) from comment co, post p where c.id = p.community_id and p.id = co.post_id) as number_of_comments,
hot_rank((select count(*) from community_follower cf where cf.community_id = c.id), c.published) as hot_rank
from community c
)
select
ac.*,
u.id as user_id,
(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
from user_ u
cross join all_community ac
union all
select
ac.*,
null as user_id,
null as subscribed
from all_community ac
;
-- reply and comment view
drop view reply_view;
drop view user_mention_view;
drop view comment_view;
drop view comment_mview;
drop materialized view comment_aggregates_mview;
drop view comment_aggregates_view;
create view comment_view as
with all_comment as
(
select
c.*,
(select community_id from post p where p.id = c.post_id),
(select u.banned from user_ u where c.creator_id = u.id) as banned,
(select cb.id::bool from community_user_ban cb, post p where c.creator_id = cb.user_id and p.id = c.post_id and p.community_id = cb.community_id) as banned_from_community,
(select name from user_ where c.creator_id = user_.id) as creator_name,
(select avatar from user_ where c.creator_id = user_.id) as creator_avatar,
coalesce(sum(cl.score), 0) as score,
count (case when cl.score = 1 then 1 else null end) as upvotes,
count (case when cl.score = -1 then 1 else null end) as downvotes
from comment c
left join comment_like cl on c.id = cl.comment_id
group by c.id
)
select
ac.*,
u.id as user_id,
coalesce(cl.score, 0) as my_vote,
(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
from user_ u
cross join all_comment ac
left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
union all
select
ac.*,
null as user_id,
null as my_vote,
null as saved
from all_comment ac
;
create view reply_view as
with closereply as (
select
c2.id,
c2.creator_id as sender_id,
c.creator_id as recipient_id
from comment c
inner join comment c2 on c.id = c2.parent_id
where c2.creator_id != c.creator_id
-- Do union where post is null
union
select
c.id,
c.creator_id as sender_id,
p.creator_id as recipient_id
from comment c, post p
where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
)
select cv.*,
closereply.recipient_id
from comment_view cv, closereply
where closereply.id = cv.id
;
-- user mention
create view user_mention_view as
select
c.id,
um.id as user_mention_id,
c.creator_id,
c.post_id,
c.parent_id,
c.content,
c.removed,
um.read,
c.published,
c.updated,
c.deleted,
c.community_id,
c.banned,
c.banned_from_community,
c.creator_name,
c.creator_avatar,
c.score,
c.upvotes,
c.downvotes,
c.user_id,
c.my_vote,
c.saved,
um.recipient_id
from user_mention um, comment_view c
where um.comment_id = c.id;

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-- post
create view post_aggregates_view as
select
p.*,
(select u.banned from user_ u where p.creator_id = u.id) as banned,
(select cb.id::bool from community_user_ban cb where p.creator_id = cb.user_id and p.community_id = cb.community_id) as banned_from_community,
(select name from user_ where p.creator_id = user_.id) as creator_name,
(select avatar from user_ where p.creator_id = user_.id) as creator_avatar,
(select name from community where p.community_id = community.id) as community_name,
(select removed from community c where p.community_id = c.id) as community_removed,
(select deleted from community c where p.community_id = c.id) as community_deleted,
(select nsfw from community c where p.community_id = c.id) as community_nsfw,
(select count(*) from comment where comment.post_id = p.id) as number_of_comments,
coalesce(sum(pl.score), 0) as score,
count (case when pl.score = 1 then 1 else null end) as upvotes,
count (case when pl.score = -1 then 1 else null end) as downvotes,
hot_rank(coalesce(sum(pl.score) , 0), p.published) as hot_rank
from post p
left join post_like pl on p.id = pl.post_id
group by p.id;
create materialized view post_aggregates_mview as select * from post_aggregates_view;
create unique index idx_post_aggregates_mview_id on post_aggregates_mview (id);
drop view post_view;
create view post_view as
with all_post as (
select
pa.*
from post_aggregates_view pa
)
select
ap.*,
u.id as user_id,
coalesce(pl.score, 0) as my_vote,
(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
from user_ u
cross join all_post ap
left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
union all
select
ap.*,
null as user_id,
null as my_vote,
null as subscribed,
null as read,
null as saved
from all_post ap
;
create view post_mview as
with all_post as (
select
pa.*
from post_aggregates_mview pa
)
select
ap.*,
u.id as user_id,
coalesce(pl.score, 0) as my_vote,
(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
from user_ u
cross join all_post ap
left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
union all
select
ap.*,
null as user_id,
null as my_vote,
null as subscribed,
null as read,
null as saved
from all_post ap
;
-- user_view
drop view user_view;
create view user_view as
select
u.id,
u.name,
u.avatar,
u.email,
u.fedi_name,
u.admin,
u.banned,
u.show_avatars,
u.send_notifications_to_email,
u.published,
(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
from user_ u;
create materialized view user_mview as select * from user_view;
create unique index idx_user_mview_id on user_mview (id);
-- community
create view community_aggregates_view as
select c.*,
(select name from user_ u where c.creator_id = u.id) as creator_name,
(select avatar from user_ u where c.creator_id = u.id) as creator_avatar,
(select name from category ct where c.category_id = ct.id) as category_name,
(select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers,
(select count(*) from post p where p.community_id = c.id) as number_of_posts,
(select count(*) from comment co, post p where c.id = p.community_id and p.id = co.post_id) as number_of_comments,
hot_rank((select count(*) from community_follower cf where cf.community_id = c.id), c.published) as hot_rank
from community c;
create materialized view community_aggregates_mview as select * from community_aggregates_view;
create unique index idx_community_aggregates_mview_id on community_aggregates_mview (id);
drop view community_view;
create view community_view as
with all_community as
(
select
ca.*
from community_aggregates_view ca
)
select
ac.*,
u.id as user_id,
(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
from user_ u
cross join all_community ac
union all
select
ac.*,
null as user_id,
null as subscribed
from all_community ac
;
create view community_mview as
with all_community as
(
select
ca.*
from community_aggregates_mview ca
)
select
ac.*,
u.id as user_id,
(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
from user_ u
cross join all_community ac
union all
select
ac.*,
null as user_id,
null as subscribed
from all_community ac
;
-- reply and comment view
create view comment_aggregates_view as
select
c.*,
(select community_id from post p where p.id = c.post_id),
(select u.banned from user_ u where c.creator_id = u.id) as banned,
(select cb.id::bool from community_user_ban cb, post p where c.creator_id = cb.user_id and p.id = c.post_id and p.community_id = cb.community_id) as banned_from_community,
(select name from user_ where c.creator_id = user_.id) as creator_name,
(select avatar from user_ where c.creator_id = user_.id) as creator_avatar,
coalesce(sum(cl.score), 0) as score,
count (case when cl.score = 1 then 1 else null end) as upvotes,
count (case when cl.score = -1 then 1 else null end) as downvotes
from comment c
left join comment_like cl on c.id = cl.comment_id
group by c.id;
create materialized view comment_aggregates_mview as select * from comment_aggregates_view;
create unique index idx_comment_aggregates_mview_id on comment_aggregates_mview (id);
drop view reply_view;
drop view user_mention_view;
drop view comment_view;
create view comment_view as
with all_comment as
(
select
ca.*
from comment_aggregates_view ca
)
select
ac.*,
u.id as user_id,
coalesce(cl.score, 0) as my_vote,
(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
from user_ u
cross join all_comment ac
left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
union all
select
ac.*,
null as user_id,
null as my_vote,
null as saved
from all_comment ac
;
create view comment_mview as
with all_comment as
(
select
ca.*
from comment_aggregates_mview ca
)
select
ac.*,
u.id as user_id,
coalesce(cl.score, 0) as my_vote,
(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
from user_ u
cross join all_comment ac
left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
union all
select
ac.*,
null as user_id,
null as my_vote,
null as saved
from all_comment ac
;
create view reply_view as
with closereply as (
select
c2.id,
c2.creator_id as sender_id,
c.creator_id as recipient_id
from comment c
inner join comment c2 on c.id = c2.parent_id
where c2.creator_id != c.creator_id
-- Do union where post is null
union
select
c.id,
c.creator_id as sender_id,
p.creator_id as recipient_id
from comment c, post p
where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
)
select cv.*,
closereply.recipient_id
from comment_view cv, closereply
where closereply.id = cv.id
;
-- user mention
create view user_mention_view as
select
c.id,
um.id as user_mention_id,
c.creator_id,
c.post_id,
c.parent_id,
c.content,
c.removed,
um.read,
c.published,
c.updated,
c.deleted,
c.community_id,
c.banned,
c.banned_from_community,
c.creator_name,
c.creator_avatar,
c.score,
c.upvotes,
c.downvotes,
c.user_id,
c.my_vote,
c.saved,
um.recipient_id
from user_mention um, comment_view c
where um.comment_id = c.id;
-- user
create or replace function refresh_user()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently user_mview;
refresh materialized view concurrently comment_aggregates_mview; -- cause of bans
refresh materialized view concurrently post_aggregates_mview;
return null;
end $$;
create trigger refresh_user
after insert or update or delete or truncate
on user_
for each statement
execute procedure refresh_user();
-- post
create or replace function refresh_post()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently post_aggregates_mview;
refresh materialized view concurrently user_mview;
return null;
end $$;
create trigger refresh_post
after insert or update or delete or truncate
on post
for each statement
execute procedure refresh_post();
-- post_like
create or replace function refresh_post_like()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently post_aggregates_mview;
refresh materialized view concurrently user_mview;
return null;
end $$;
create trigger refresh_post_like
after insert or update or delete or truncate
on post_like
for each statement
execute procedure refresh_post_like();
-- community
create or replace function refresh_community()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently post_aggregates_mview;
refresh materialized view concurrently community_aggregates_mview;
refresh materialized view concurrently user_mview;
return null;
end $$;
create trigger refresh_community
after insert or update or delete or truncate
on community
for each statement
execute procedure refresh_community();
-- community_follower
create or replace function refresh_community_follower()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently community_aggregates_mview;
refresh materialized view concurrently post_aggregates_mview;
return null;
end $$;
create trigger refresh_community_follower
after insert or update or delete or truncate
on community_follower
for each statement
execute procedure refresh_community_follower();
-- community_user_ban
create or replace function refresh_community_user_ban()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently comment_aggregates_mview;
refresh materialized view concurrently post_aggregates_mview;
return null;
end $$;
create trigger refresh_community_user_ban
after insert or update or delete or truncate
on community_user_ban
for each statement
execute procedure refresh_community_user_ban();
-- comment
create or replace function refresh_comment()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently post_aggregates_mview;
refresh materialized view concurrently comment_aggregates_mview;
refresh materialized view concurrently community_aggregates_mview;
refresh materialized view concurrently user_mview;
return null;
end $$;
create trigger refresh_comment
after insert or update or delete or truncate
on comment
for each statement
execute procedure refresh_comment();
-- comment_like
create or replace function refresh_comment_like()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently comment_aggregates_mview;
refresh materialized view concurrently user_mview;
return null;
end $$;
create trigger refresh_comment_like
after insert or update or delete or truncate
on comment_like
for each statement
execute procedure refresh_comment_like();

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-- functions and triggers
drop trigger refresh_user on user_;
drop function refresh_user();
drop trigger refresh_post on post;
drop function refresh_post();
drop trigger refresh_post_like on post_like;
drop function refresh_post_like();
drop trigger refresh_community on community;
drop function refresh_community();
drop trigger refresh_community_follower on community_follower;
drop function refresh_community_follower();
drop trigger refresh_comment on comment;
drop function refresh_comment();
drop trigger refresh_comment_like on comment_like;
drop function refresh_comment_like();
-- post
-- Recreate the view
drop materialized view post_view;
create view post_view as
with all_post as
(
select
p.*,
(select u.banned from user_ u where p.creator_id = u.id) as banned,
(select cb.id::bool from community_user_ban cb where p.creator_id = cb.user_id and p.community_id = cb.community_id) as banned_from_community,
(select name from user_ where p.creator_id = user_.id) as creator_name,
(select avatar from user_ where p.creator_id = user_.id) as creator_avatar,
(select name from community where p.community_id = community.id) as community_name,
(select removed from community c where p.community_id = c.id) as community_removed,
(select deleted from community c where p.community_id = c.id) as community_deleted,
(select nsfw from community c where p.community_id = c.id) as community_nsfw,
(select count(*) from comment where comment.post_id = p.id) as number_of_comments,
coalesce(sum(pl.score), 0) as score,
count (case when pl.score = 1 then 1 else null end) as upvotes,
count (case when pl.score = -1 then 1 else null end) as downvotes,
hot_rank(coalesce(sum(pl.score) , 0), p.published) as hot_rank
from post p
left join post_like pl on p.id = pl.post_id
group by p.id
)
select
ap.*,
u.id as user_id,
coalesce(pl.score, 0) as my_vote,
(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
from user_ u
cross join all_post ap
left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
union all
select
ap.*,
null as user_id,
null as my_vote,
null as subscribed,
null as read,
null as saved
from all_post ap
;
drop materialized view user_view;
create view user_view as
select id,
name,
avatar,
email,
fedi_name,
admin,
banned,
show_avatars,
send_notifications_to_email,
published,
(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
from user_ u;
-- community
drop materialized view community_view;
create view community_view as
with all_community as
(
select *,
(select name from user_ u where c.creator_id = u.id) as creator_name,
(select avatar from user_ u where c.creator_id = u.id) as creator_avatar,
(select name from category ct where c.category_id = ct.id) as category_name,
(select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers,
(select count(*) from post p where p.community_id = c.id) as number_of_posts,
(select count(*) from comment co, post p where c.id = p.community_id and p.id = co.post_id) as number_of_comments,
hot_rank((select count(*) from community_follower cf where cf.community_id = c.id), c.published) as hot_rank
from community c
)
select
ac.*,
u.id as user_id,
(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
from user_ u
cross join all_community ac
union all
select
ac.*,
null as user_id,
null as subscribed
from all_community ac
;
-- reply and comment view
drop view reply_view;
drop view user_mention_view;
drop materialized view comment_view;
create view comment_view as
with all_comment as
(
select
c.*,
(select community_id from post p where p.id = c.post_id),
(select u.banned from user_ u where c.creator_id = u.id) as banned,
(select cb.id::bool from community_user_ban cb, post p where c.creator_id = cb.user_id and p.id = c.post_id and p.community_id = cb.community_id) as banned_from_community,
(select name from user_ where c.creator_id = user_.id) as creator_name,
(select avatar from user_ where c.creator_id = user_.id) as creator_avatar,
coalesce(sum(cl.score), 0) as score,
count (case when cl.score = 1 then 1 else null end) as upvotes,
count (case when cl.score = -1 then 1 else null end) as downvotes
from comment c
left join comment_like cl on c.id = cl.comment_id
group by c.id
)
select
ac.*,
u.id as user_id,
coalesce(cl.score, 0) as my_vote,
(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
from user_ u
cross join all_comment ac
left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
union all
select
ac.*,
null as user_id,
null as my_vote,
null as saved
from all_comment ac
;
create view reply_view as
with closereply as (
select
c2.id,
c2.creator_id as sender_id,
c.creator_id as recipient_id
from comment c
inner join comment c2 on c.id = c2.parent_id
where c2.creator_id != c.creator_id
-- Do union where post is null
union
select
c.id,
c.creator_id as sender_id,
p.creator_id as recipient_id
from comment c, post p
where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
)
select cv.*,
closereply.recipient_id
from comment_view cv, closereply
where closereply.id = cv.id
;
-- user mention
create view user_mention_view as
select
c.id,
um.id as user_mention_id,
c.creator_id,
c.post_id,
c.parent_id,
c.content,
c.removed,
um.read,
c.published,
c.updated,
c.deleted,
c.community_id,
c.banned,
c.banned_from_community,
c.creator_name,
c.creator_avatar,
c.score,
c.upvotes,
c.downvotes,
c.user_id,
c.my_vote,
c.saved,
um.recipient_id
from user_mention um, comment_view c
where um.comment_id = c.id;

View File

@ -0,0 +1,324 @@
-- post
drop view post_view;
create materialized view post_view as
with all_post as
(
select
p.*,
(select u.banned from user_ u where p.creator_id = u.id) as banned,
(select cb.id::bool from community_user_ban cb where p.creator_id = cb.user_id and p.community_id = cb.community_id) as banned_from_community,
(select name from user_ where p.creator_id = user_.id) as creator_name,
(select avatar from user_ where p.creator_id = user_.id) as creator_avatar,
(select name from community where p.community_id = community.id) as community_name,
(select removed from community c where p.community_id = c.id) as community_removed,
(select deleted from community c where p.community_id = c.id) as community_deleted,
(select nsfw from community c where p.community_id = c.id) as community_nsfw,
(select count(*) from comment where comment.post_id = p.id) as number_of_comments,
coalesce(sum(pl.score), 0) as score,
count (case when pl.score = 1 then 1 else null end) as upvotes,
count (case when pl.score = -1 then 1 else null end) as downvotes,
hot_rank(coalesce(sum(pl.score) , 0), p.published) as hot_rank
from post p
left join post_like pl on p.id = pl.post_id
group by p.id
)
select
ap.*,
u.id as user_id,
coalesce(pl.score, 0) as my_vote,
(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
from user_ u
cross join all_post ap
left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
union all
select
ap.*,
null as user_id,
null as my_vote,
null as subscribed,
null as read,
null as saved
from all_post ap
with data
;
create unique index idx_post_view_unique on post_view (id, user_id);
create index idx_post_view_user_id on post_view (user_id);
create index idx_post_view_hot_rank_published on post_view (hot_rank desc, published desc);
create index idx_post_view_published on post_view (published desc);
create index idx_post_view_score on post_view (score desc);
-- user_view
drop view user_view;
create materialized view user_view as
select id,
name,
avatar,
email,
fedi_name,
admin,
banned,
show_avatars,
send_notifications_to_email,
published,
(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
from user_ u;
create unique index idx_user_view_unique on user_view (id);
create index idx_user_view_comment_published on user_view (comment_score desc, published desc);
create index idx_user_view_admin on user_view (admin);
create index idx_user_view_banned on user_view (banned);
-- community
drop view community_view;
create materialized view community_view as
with all_community as
(
select *,
(select name from user_ u where c.creator_id = u.id) as creator_name,
(select avatar from user_ u where c.creator_id = u.id) as creator_avatar,
(select name from category ct where c.category_id = ct.id) as category_name,
(select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers,
(select count(*) from post p where p.community_id = c.id) as number_of_posts,
(select count(*) from comment co, post p where c.id = p.community_id and p.id = co.post_id) as number_of_comments,
hot_rank((select count(*) from community_follower cf where cf.community_id = c.id), c.published) as hot_rank
from community c
)
select
ac.*,
u.id as user_id,
(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
from user_ u
cross join all_community ac
union all
select
ac.*,
null as user_id,
null as subscribed
from all_community ac
;
create unique index idx_community_view_unique on community_view (id, user_id);
create index idx_community_view_user_id on community_view (user_id);
create index idx_community_view_hot_rank_subscribed on community_view (hot_rank desc, number_of_subscribers desc);
-- reply and comment view
drop view reply_view;
drop view user_mention_view;
drop view comment_view;
create materialized view comment_view as
with all_comment as
(
select
c.*,
(select community_id from post p where p.id = c.post_id),
(select u.banned from user_ u where c.creator_id = u.id) as banned,
(select cb.id::bool from community_user_ban cb, post p where c.creator_id = cb.user_id and p.id = c.post_id and p.community_id = cb.community_id) as banned_from_community,
(select name from user_ where c.creator_id = user_.id) as creator_name,
(select avatar from user_ where c.creator_id = user_.id) as creator_avatar,
coalesce(sum(cl.score), 0) as score,
count (case when cl.score = 1 then 1 else null end) as upvotes,
count (case when cl.score = -1 then 1 else null end) as downvotes
from comment c
left join comment_like cl on c.id = cl.comment_id
group by c.id
)
select
ac.*,
u.id as user_id,
coalesce(cl.score, 0) as my_vote,
(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
from user_ u
cross join all_comment ac
left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
union all
select
ac.*,
null as user_id,
null as my_vote,
null as saved
from all_comment ac
;
create unique index idx_comment_view_unique on comment_view (id, user_id);
create index idx_comment_view_user_id on comment_view (user_id);
create index idx_comment_view_creator_id on comment_view (creator_id);
create index idx_comment_view_post_id on comment_view (post_id);
create index idx_comment_view_score on comment_view (score desc);
create view reply_view as
with closereply as (
select
c2.id,
c2.creator_id as sender_id,
c.creator_id as recipient_id
from comment c
inner join comment c2 on c.id = c2.parent_id
where c2.creator_id != c.creator_id
-- Do union where post is null
union
select
c.id,
c.creator_id as sender_id,
p.creator_id as recipient_id
from comment c, post p
where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
)
select cv.*,
closereply.recipient_id
from comment_view cv, closereply
where closereply.id = cv.id
;
-- user mention
create view user_mention_view as
select
c.id,
um.id as user_mention_id,
c.creator_id,
c.post_id,
c.parent_id,
c.content,
c.removed,
um.read,
c.published,
c.updated,
c.deleted,
c.community_id,
c.banned,
c.banned_from_community,
c.creator_name,
c.creator_avatar,
c.score,
c.upvotes,
c.downvotes,
c.user_id,
c.my_vote,
c.saved,
um.recipient_id
from user_mention um, comment_view c
where um.comment_id = c.id;
-- user
create or replace function refresh_user()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently comment_view; -- cause of bans
refresh materialized view concurrently post_view;
return null;
end $$;
create trigger refresh_user
after insert or update or delete or truncate
on user_
for each statement
execute procedure refresh_user();
-- post
create or replace function refresh_post()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently post_view;
return null;
end $$;
create trigger refresh_post
after insert or update or delete or truncate
on post
for each statement
execute procedure refresh_post();
-- post_like
create or replace function refresh_post_like()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently post_view;
return null;
end $$;
create trigger refresh_post_like
after insert or update or delete or truncate
on post_like
for each statement
execute procedure refresh_post_like();
-- community
create or replace function refresh_community()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently post_view;
refresh materialized view concurrently community_view;
return null;
end $$;
create trigger refresh_community
after insert or update or delete or truncate
on community
for each statement
execute procedure refresh_community();
-- community_follower
create or replace function refresh_community_follower()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently community_view;
refresh materialized view concurrently post_view;
return null;
end $$;
create trigger refresh_community_follower
after insert or update or delete or truncate
on community_follower
for each statement
execute procedure refresh_community_follower();
-- comment
create or replace function refresh_comment()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently post_view;
refresh materialized view concurrently comment_view;
return null;
end $$;
create trigger refresh_comment
after insert or update or delete or truncate
on comment
for each statement
execute procedure refresh_comment();
-- comment_like
create or replace function refresh_comment_like()
returns trigger language plpgsql
as $$
begin
refresh materialized view concurrently comment_view;
return null;
end $$;
create trigger refresh_comment_like
after insert or update or delete or truncate
on comment_like
for each statement
execute procedure refresh_comment_like();

View File

@ -7,6 +7,7 @@ declare -a arr=(
"https://dev.lemmy.ml/feeds/all.xml"
"https://dev.lemmy.ml/.well-known/nodeinfo"
"https://fediverse.blog/.well-known/nodeinfo"
"https://torrents-csv.ml/service/search?q=wheel&page=1&type_=torrent"
)
## now loop through the above array

View File

@ -2,19 +2,16 @@
# Do the views first
echo "explain (analyze, format json) select * from user_view" > explain.sql
echo "explain (analyze, format json) select * from user_mview" > explain.sql
psql -qAt -U lemmy -f explain.sql > user_view.json
echo "explain (analyze, format json) select * from post_view where user_id is null order by hot_rank desc" > explain.sql
echo "explain (analyze, format json) select * from post_mview where user_id is null order by hot_rank desc, published desc" > explain.sql
psql -qAt -U lemmy -f explain.sql > post_view.json
echo "explain (analyze, format json) select * from post" > explain.sql
psql -qAt -U lemmy -f explain.sql > post.json
echo "explain (analyze, format json) select * from comment_view where user_id is null" > explain.sql
echo "explain (analyze, format json) select * from comment_mview where user_id is null" > explain.sql
psql -qAt -U lemmy -f explain.sql > comment_view.json
echo "explain (analyze, format json) select * from community_view where user_id is null order by hot_rank desc" > explain.sql
echo "explain (analyze, format json) select * from community_mview where user_id is null order by hot_rank desc" > explain.sql
psql -qAt -U lemmy -f explain.sql > community_view.json
echo "explain (analyze, format json) select * from site_view limit 1" > explain.sql

View File

@ -28,6 +28,32 @@ table! {
}
}
table! {
comment_mview (id) {
id -> Int4,
creator_id -> Int4,
post_id -> Int4,
parent_id -> Nullable<Int4>,
content -> Text,
removed -> Bool,
read -> Bool,
published -> Timestamp,
updated -> Nullable<Timestamp>,
deleted -> Bool,
community_id -> Int4,
banned -> Bool,
banned_from_community -> Bool,
creator_name -> Varchar,
creator_avatar -> Nullable<Text>,
score -> BigInt,
upvotes -> BigInt,
downvotes -> BigInt,
user_id -> Nullable<Int4>,
my_vote -> Nullable<Int4>,
saved -> Nullable<Bool>,
}
}
#[derive(
Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize, QueryableByName, Clone,
)]
@ -58,7 +84,7 @@ pub struct CommentView {
pub struct CommentQueryBuilder<'a> {
conn: &'a PgConnection,
query: super::comment_view::comment_view::BoxedQuery<'a, Pg>,
query: super::comment_view::comment_mview::BoxedQuery<'a, Pg>,
sort: &'a SortType,
for_post_id: Option<i32>,
for_creator_id: Option<i32>,
@ -71,9 +97,9 @@ pub struct CommentQueryBuilder<'a> {
impl<'a> CommentQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection) -> Self {
use super::comment_view::comment_view::dsl::*;
use super::comment_view::comment_mview::dsl::*;
let query = comment_view.into_boxed();
let query = comment_mview.into_boxed();
CommentQueryBuilder {
conn,
@ -130,7 +156,7 @@ impl<'a> CommentQueryBuilder<'a> {
}
pub fn list(self) -> Result<Vec<CommentView>, Error> {
use super::comment_view::comment_view::dsl::*;
use super::comment_view::comment_mview::dsl::*;
let mut query = self.query;

View File

@ -1,4 +1,4 @@
use super::community_view::community_view::BoxedQuery;
use super::community_view::community_mview::BoxedQuery;
use super::*;
use diesel::pg::Pg;
@ -27,6 +27,31 @@ table! {
}
}
table! {
community_mview (id) {
id -> Int4,
name -> Varchar,
title -> Varchar,
description -> Nullable<Text>,
category_id -> Int4,
creator_id -> Int4,
removed -> Bool,
published -> Timestamp,
updated -> Nullable<Timestamp>,
deleted -> Bool,
nsfw -> Bool,
creator_name -> Varchar,
creator_avatar -> Nullable<Text>,
category_name -> Varchar,
number_of_subscribers -> BigInt,
number_of_posts -> BigInt,
number_of_comments -> BigInt,
hot_rank -> Int4,
user_id -> Nullable<Int4>,
subscribed -> Nullable<Bool>,
}
}
table! {
community_moderator_view (id) {
id -> Int4,
@ -103,9 +128,9 @@ pub struct CommunityQueryBuilder<'a> {
impl<'a> CommunityQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection) -> Self {
use super::community_view::community_view::dsl::*;
use super::community_view::community_mview::dsl::*;
let query = community_view.into_boxed();
let query = community_mview.into_boxed();
CommunityQueryBuilder {
conn,
@ -150,7 +175,7 @@ impl<'a> CommunityQueryBuilder<'a> {
}
pub fn list(self) -> Result<Vec<CommunityView>, Error> {
use super::community_view::community_view::dsl::*;
use super::community_view::community_mview::dsl::*;
let mut query = self.query;

View File

@ -1,4 +1,4 @@
use super::post_view::post_view::BoxedQuery;
use super::post_view::post_mview::BoxedQuery;
use super::*;
use diesel::pg::Pg;
@ -77,6 +77,43 @@ pub struct PostView {
pub saved: Option<bool>,
}
// The faked schema since diesel doesn't do views
table! {
post_mview (id) {
id -> Int4,
name -> Varchar,
url -> Nullable<Text>,
body -> Nullable<Text>,
creator_id -> Int4,
community_id -> Int4,
removed -> Bool,
locked -> Bool,
published -> Timestamp,
updated -> Nullable<Timestamp>,
deleted -> Bool,
nsfw -> Bool,
banned -> Bool,
banned_from_community -> Bool,
stickied -> Bool,
creator_name -> Varchar,
creator_avatar -> Nullable<Text>,
community_name -> Varchar,
community_removed -> Bool,
community_deleted -> Bool,
community_nsfw -> Bool,
number_of_comments -> BigInt,
score -> BigInt,
upvotes -> BigInt,
downvotes -> BigInt,
hot_rank -> Int4,
user_id -> Nullable<Int4>,
my_vote -> Nullable<Int4>,
subscribed -> Nullable<Bool>,
read -> Nullable<Bool>,
saved -> Nullable<Bool>,
}
}
pub struct PostQueryBuilder<'a> {
conn: &'a PgConnection,
query: BoxedQuery<'a, Pg>,
@ -93,9 +130,9 @@ pub struct PostQueryBuilder<'a> {
impl<'a> PostQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection) -> Self {
use super::post_view::post_view::dsl::*;
use super::post_view::post_mview::dsl::*;
let query = post_view.into_boxed();
let query = post_mview.into_boxed();
PostQueryBuilder {
conn,
@ -123,7 +160,7 @@ impl<'a> PostQueryBuilder<'a> {
}
pub fn for_community_id<T: MaybeOptional<i32>>(mut self, for_community_id: T) -> Self {
use super::post_view::post_view::dsl::*;
use super::post_view::post_mview::dsl::*;
if let Some(for_community_id) = for_community_id.get_optional() {
self.query = self.query.filter(community_id.eq(for_community_id));
self.query = self.query.then_order_by(stickied.desc());
@ -139,7 +176,7 @@ impl<'a> PostQueryBuilder<'a> {
}
pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
use super::post_view::post_view::dsl::*;
use super::post_view::post_mview::dsl::*;
if let Some(search_term) = search_term.get_optional() {
self.query = self.query.filter(name.ilike(fuzzy_search(&search_term)));
}
@ -147,7 +184,7 @@ impl<'a> PostQueryBuilder<'a> {
}
pub fn url_search<T: MaybeOptional<String>>(mut self, url_search: T) -> Self {
use super::post_view::post_view::dsl::*;
use super::post_view::post_mview::dsl::*;
if let Some(url_search) = url_search.get_optional() {
self.query = self.query.filter(url.eq(url_search));
}
@ -185,7 +222,7 @@ impl<'a> PostQueryBuilder<'a> {
}
pub fn list(self) -> Result<Vec<PostView>, Error> {
use super::post_view::post_view::dsl::*;
use super::post_view::post_mview::dsl::*;
let mut query = self.query;

View File

@ -1,4 +1,4 @@
use super::user_view::user_view::BoxedQuery;
use super::user_view::user_mview::BoxedQuery;
use super::*;
use diesel::pg::Pg;
@ -21,6 +21,25 @@ table! {
}
}
table! {
user_mview (id) {
id -> Int4,
name -> Varchar,
avatar -> Nullable<Text>,
email -> Nullable<Text>,
fedi_name -> Varchar,
admin -> Bool,
banned -> Bool,
show_avatars -> Bool,
send_notifications_to_email -> Bool,
published -> Timestamp,
number_of_posts -> BigInt,
post_score -> BigInt,
number_of_comments -> BigInt,
comment_score -> BigInt,
}
}
#[derive(
Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize, QueryableByName, Clone,
)]
@ -52,9 +71,9 @@ pub struct UserQueryBuilder<'a> {
impl<'a> UserQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection) -> Self {
use super::user_view::user_view::dsl::*;
use super::user_view::user_mview::dsl::*;
let query = user_view.into_boxed();
let query = user_mview.into_boxed();
UserQueryBuilder {
conn,
@ -71,7 +90,7 @@ impl<'a> UserQueryBuilder<'a> {
}
pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
use super::user_view::user_view::dsl::*;
use super::user_view::user_mview::dsl::*;
if let Some(search_term) = search_term.get_optional() {
self.query = self.query.filter(name.ilike(fuzzy_search(&search_term)));
}
@ -89,7 +108,7 @@ impl<'a> UserQueryBuilder<'a> {
}
pub fn list(self) -> Result<Vec<UserView>, Error> {
use super::user_view::user_view::dsl::*;
use super::user_view::user_mview::dsl::*;
let mut query = self.query;
@ -128,12 +147,12 @@ impl UserView {
}
pub fn admins(conn: &PgConnection) -> Result<Vec<Self>, Error> {
use super::user_view::user_view::dsl::*;
user_view.filter(admin.eq(true)).load::<Self>(conn)
use super::user_view::user_mview::dsl::*;
user_mview.filter(admin.eq(true)).load::<Self>(conn)
}
pub fn banned(conn: &PgConnection) -> Result<Vec<Self>, Error> {
use super::user_view::user_view::dsl::*;
user_view.filter(banned.eq(true)).load::<Self>(conn)
use super::user_view::user_mview::dsl::*;
user_mview.filter(banned.eq(true)).load::<Self>(conn)
}
}

View File

@ -141,7 +141,7 @@ impl StreamHandler<Result<ws::Message, ws::ProtocolError>> for WSSession {
}
ws::Message::Text(text) => {
let m = text.trim().to_owned();
// println!("WEBSOCKET MESSAGE: {:?} from id: {}", &m, self.id);
println!("WEBSOCKET MESSAGE: {:?} from id: {}", &m, self.id);
self
.cs_addr