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catalog-backend: optimize entity filter queries with EXISTS

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Switch filter query builders from IN (subquery) to EXISTS (correlated
subquery) patterns. This enables PostgreSQL semi-join optimizations
(stops at first match) and replaces NOT IN with NOT EXISTS (faster,
no NULL-semantics pitfalls).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Fredrik Adelöw <freben@spotify.com>
This commit is contained in:
Fredrik Adelöw
2026-03-28 22:45:48 +01:00
parent 0cb1189130
commit 688481429c
3 changed files with 67 additions and 48 deletions
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.changeset/catalog-exists-query-optimization.md
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'@backstage/plugin-catalog-backend': patch
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Improved catalog entity filter query performance by switching from `IN (subquery)` to `EXISTS (correlated subquery)` patterns. This enables PostgreSQL semi-join optimizations and fixes `NOT IN` NULL-semantics pitfalls by using `NOT EXISTS` instead.