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d4387c5502* perf(db): add composite indexes for song list album/artist sorts
The media_file sort mappings for album, artist and albumArtist expand to
multi-column ORDER BY clauses that no existing index could satisfy, so SQLite
fell back to a full table scan plus a temp B-tree sort of every row (including
the large lyrics/tags/full_text columns) even for a single 15-item page. On a
96K-track library this made /api/song?_sort=album take 3.6s on a cold cache.
Add composite indexes matching the three sort mappings, allowing the query to
walk the index and stop at the page size, in both directions. Drop the now
redundant single-column order_album_name/order_artist_name indexes (strict
prefixes of the new composites) and three indexes with no query path:
birth_time is only read in Go code, and artist/album_artist text column
lookups go through the media_file_artists table instead.
* fix(ui): make composer and track number columns non-sortable in song list
Clicking the Composer header was a silent no-op: composer is not a media_file
column, so the native API's sanitizeSort drops the sort and returns rows in
table order. Track number sorting across the whole library is not meaningful
and cannot use an index (the existing index leads with disc_number). Mark both
columns sortable={false}, like quality and mood.
* test(persistence): add sort index coverage test for large tables
Guard against sort options silently losing index support: every sort mapping
on media_file, album and artist is now verified with EXPLAIN QUERY PLAN to be
satisfiable by an index (both directions), so adding a mapping or dropping an
index that reintroduces a full-table temp B-tree sort fails the test. Sorts
that genuinely cannot use an index (random, annotation-join columns, JSON
expressions) must be declared in an exceptions list with the reason, keeping
the trade-off visible in review.
To make the sort mappings the complete declared sort surface, add identity
mappings for the media_file columns the UI sorts by without a mapping (year,
genre, duration, channels, bpm, path, comment, play_count, play_date, rating).
These are behaviorally no-ops: the same ORDER BY was previously produced by
the field whitelist fallback.
* perf(db): drop PreferSortTags expression indexes from media_file
The media_file sort_title/sort_artist_name/sort_album_name expression indexes
are only usable when PreferSortTags is enabled - a config reported by ~0.1% of
installations (insights, week of 2026-06-22) - yet every install pays their
storage (~8.6MB on a 96K-track library) and scanner write overhead. Drop them:
PreferSortTags installs fall back to a full sort for title/artist/album orders,
everyone else gets smaller DBs and cheaper writes. The order_album_name and
order_artist_name collation checks remain valid, now satisfied by the composite
sort indexes.
Signed-off-by: Deluan <deluan@navidrome.org>
---------
Signed-off-by: Deluan <deluan@navidrome.org>
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| .. | ||
| actions | ||
| album | ||
| artist | ||
| audioplayer | ||
| common | ||
| dataProvider | ||
| dialogs | ||
| i18n | ||
| icons | ||
| layout | ||
| library | ||
| missing | ||
| personal | ||
| player | ||
| playlist | ||
| plugin | ||
| radio | ||
| reducers | ||
| share | ||
| song | ||
| store | ||
| subsonic | ||
| themes | ||
| transcode | ||
| transcoding | ||
| user | ||
| utils | ||
| App.jsx | ||
| authProvider.js | ||
| config.js | ||
| consts.js | ||
| eventStream.js | ||
| eventStream.test.js | ||
| hotkeys.js | ||
| index.css | ||
| index.jsx | ||
| routes.jsx | ||
| setupTests.js | ||
| sw.js | ||
| useChangeThemeColor.jsx | ||
| vite-env.d.ts | ||