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Fix random_projects route not returning the requested number of projects (#3758)

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* Fix random_projects route not returning the requested number of projects

* fix(labrinth): further improve random project route SQL query

* chore: fix typo in comment

* tweak(labrinth): more apparent and fast randomness for `random_projects_get`

* tweak(labrinth): even better random projects query

* chore: address formatting review

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Co-authored-by: Alejandro González <me@alegon.dev>
This commit is contained in:
Emma Alexia
2025-06-08 19:49:39 -04:00
committed by GitHub
parent 3489771d2e
commit 06f1df1995
4 changed files with 42 additions and 27 deletions
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12
apps/labrinth/migrations/20250608183828_random-project-index.sql Normal file
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-- This index substantially brings down the cost of the query plan for the
-- hot query at `labrinth::routes::v3::projects::random_projects_get`, from
-- 354.04..363.39 to 171.33..180.68 (~2x improvement).
--
-- The numbers above were calculated in a clean PostgreSQL 17.5.0 container
-- with 10k mods created with the SQL below.
--
-- WITH seq AS (SELECT n FROM GENERATE_SERIES(1, 10000) AS n)
-- INSERT INTO mods (id, team_id, name, summary, icon_url, license_url, slug, status)
-- SELECT n, 1, n, '', '', '', n, (ARRAY['approved', 'pending'])[n % 2 + 1] from seq;
CREATE INDEX mods_status ON mods(status);