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configurable ranking

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This commit is contained in:
keyan 2023-08-16 17:51:55 -05:00
parent 68f298fc21
commit c9a409845c
3 changed files with 59 additions and 3 deletions
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4
api/resolvers/item.js
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@ -157,11 +157,11 @@ export async function joinSatRankView (me, models) {
if (me) { if (me) {
const user = await models.user.findUnique({ where: { id: me.id } }) const user = await models.user.findUnique({ where: { id: me.id } })
if (user.wildWestMode) { if (user.wildWestMode) {
return 'JOIN sat_rank_wwm_view ON "Item".id = sat_rank_wwm_view.id' return 'JOIN zap_rank_wwm_view ON "Item".id = zap_rank_wwm_view.id'
} }
} }
return 'JOIN sat_rank_tender_view ON "Item".id = sat_rank_tender_view.id' return 'JOIN zap_rank_tender_view ON "Item".id = zap_rank_tender_view.id'
} }
export async function filterClause (me, models, type) { export async function filterClause (me, models, type) {

56
prisma/migrations/20230816193946_constants/migration.sql Normal file
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@ -0,0 +1,56 @@
-- we don't want to have to update our zap_rank views
-- when constants change. so we'll just make a view that we can update
CREATE OR REPLACE VIEW zap_rank_constants AS
SELECT
5000.0 AS boost_per_vote,
1.2 AS vote_power,
1.3 AS vote_decay,
3.0 AS age_wait_hours,
0.5 AS comment_scaler,
2.2 AS boost_power,
2.6 AS boost_decay,
2100 AS row_limit;
CREATE MATERIALIZED VIEW IF NOT EXISTS zap_rank_wwm_view AS
SELECT id, rank() OVER (ORDER BY
(
(GREATEST("weightedVotes", POWER("weightedVotes", vote_power)) + "weightedComments"*comment_scaler)
/
POWER(GREATEST(age_wait_hours, EXTRACT(EPOCH FROM (now_utc() - created_at))/3600), vote_decay)
+
POWER(boost/boost_per_vote, boost_power)
/
POWER(GREATEST(age_wait_hours, EXTRACT(EPOCH FROM (now_utc() - created_at))/3600), boost_decay)
) DESC NULLS LAST, id DESC) AS rank
FROM "Item", zap_rank_constants
WHERE "parentId" IS NULL
AND NOT bio
AND "pinId" IS NULL
AND "deletedAt" IS NULL
AND ("weightedVotes" > 0 OR boost > 0)
ORDER BY rank ASC
LIMIT (SELECT row_limit FROM zap_rank_constants);
CREATE UNIQUE INDEX IF NOT EXISTS zap_rank_wwm_view_idx ON zap_rank_wwm_view(rank ASC);
CREATE MATERIALIZED VIEW IF NOT EXISTS zap_rank_tender_view AS
SELECT id, rank() OVER (ORDER BY
(
(GREATEST(ABS("weightedVotes" - "weightedDownVotes"), POWER(ABS("weightedVotes" - "weightedDownVotes"), vote_power)) + "weightedComments"*comment_scaler)
/
POWER(GREATEST(age_wait_hours, EXTRACT(EPOCH FROM (now_utc() - created_at))/3600), vote_decay)
+
POWER(boost/boost_per_vote, boost_power)
/
POWER(GREATEST(age_wait_hours, EXTRACT(EPOCH FROM (now_utc() - created_at))/3600), boost_decay)
) DESC NULLS LAST, id DESC) AS rank
FROM "Item", zap_rank_constants
WHERE "parentId" IS NULL
AND NOT bio
AND "pinId" IS NULL
AND "deletedAt" IS NULL
AND ("weightedVotes" > "weightedDownVotes" OR boost > 0)
ORDER BY rank ASC
LIMIT (SELECT row_limit FROM zap_rank_constants);
CREATE UNIQUE INDEX IF NOT EXISTS zap_rank_tender_view_idx ON zap_rank_tender_view(rank ASC);

2
worker/views.js
View File

@ -18,7 +18,7 @@ function rankViews ({ models }) {
return async function () { return async function () {
console.log('refreshing rank views') console.log('refreshing rank views')
for (const view of ['sat_rank_wwm_view', 'sat_rank_tender_view']) { for (const view of ['zap_rank_wwm_view', 'zap_rank_tender_view']) {
await models.$queryRawUnsafe(`REFRESH MATERIALIZED VIEW CONCURRENTLY ${view}`) await models.$queryRawUnsafe(`REFRESH MATERIALIZED VIEW CONCURRENTLY ${view}`)
} }