brewlog/migrations/0005_brew_gear_indexes.sql
Jon Seager 494e0346bf
perf(db): enable WAL mode, add tuning pragmas and missing indexes
- Enable WAL journal mode for concurrent reads during writes
- Set synchronous=NORMAL, cache_size=8MB, temp_store=MEMORY, busy_timeout=5s
- Add indexes on brews.grinder_id, brews.brewer_id, brews.filter_paper_id
  to speed up the 6-table brew list JOIN
- Gitignore WAL sidecar files (*.db-shm, *.db-wal)
2026-02-06 18:04:58 +00:00

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SQL

-- Add missing indexes on brew foreign keys to gear table.
-- The brew list query joins gear 3 times (grinder, brewer, filter paper);
-- these indexes avoid full table scans on the gear side of each join.
CREATE INDEX idx_brews_grinder_id ON brews(grinder_id);
CREATE INDEX idx_brews_brewer_id ON brews(brewer_id);
CREATE INDEX idx_brews_filter_paper_id ON brews(filter_paper_id);