navidrome/server
Deluan Quintão 756df9decf
fix: dedupe and cap concurrent lyrics plugin fetches (#5792)
* fix: dedupe and cap concurrent lyrics plugin fetches

Clients like Finamp prefetch lyrics for several queue tracks at once. The
resulting burst of concurrent plugin calls can rate-limit the primary
lyrics provider into a timeout, making the plugin fall back to a lower
quality source and cache the bad result.

SimpleCache.GetWithLoader now deduplicates concurrent loads of the same
key via singleflight, with every waiter receiving the winner's result or
error. The Jellyfin lyrics loader is detached from the request context so
one cancelled request cannot fail the load for all waiters, and the
lyrics adapter caps in-flight plugin calls at 2 per plugin, queueing the
rest. As a side effect, the cached HTTP client used by the Last.fm,
Deezer and ListenBrainz agents also collapses identical concurrent
requests into a single upstream call.

* fix: harden lyrics concurrency fixes per review

Replace the stringified singleflight keys with a per-cache flight map
keyed by the cache key type itself, eliminating potential key collisions
for non-string keys, the nil-interface assertion panic, and the
stringification overhead. Release the lyrics semaphore slot via defer so
a panicking plugin call cannot leak it, and bound the detached lyrics
load with a one-minute timeout so a hung plugin cannot pin its
singleflight and semaphore slot indefinitely.
2026-07-16 20:10:35 -04:00
..
backgrounds chore(deps): bump golangci-lint to v2.10.0 and suppress new gosec false positives 2026-02-17 09:28:42 -05:00
events fix(ui): activity Indicator switching constantly between online/offline (#5054) 2026-02-17 14:47:20 -05:00
filter fix(jellyfin): honor AlbumIds filter on /Items 2026-07-15 23:29:59 -04:00
jellyfin fix: dedupe and cap concurrent lyrics plugin fetches (#5792) 2026-07-16 20:10:35 -04:00
nativeapi feat(jellyfin): experimental Jellyfin Music API support (#5730) 2026-07-14 11:46:37 -04:00
public fix(share): enforce track membership on public share streams (#5769) 2026-07-13 09:04:24 -04:00
subsonic feat(jellyfin): experimental Jellyfin Music API support (#5730) 2026-07-14 11:46:37 -04:00
testdata fix(server): improve error message for encrypted TLS private keys (#4742) 2025-11-28 17:08:34 -05:00
auth.go refactor: multiple syntax updates for Go 1.26 2026-05-19 18:02:36 -03:00
auth_test.go refactor: run Go modernize (#5002) 2026-02-08 09:57:30 -05:00
initial_setup.go fix(transcoding): include ffprobe in MSI and fall back gracefully when absent (#5326) 2026-04-07 20:11:38 -04:00
initial_setup_test.go Upgrade Ginkgo to V2 2022-07-26 16:53:17 -04:00
middlewares.go feat(jellyfin): experimental Jellyfin Music API support (#5730) 2026-07-14 11:46:37 -04:00
middlewares_test.go feat(ui): show user's lastAccess (#3342) 2024-09-30 20:46:10 -04:00
serve_index.go fix(ui): Set Cache-Control: no-cache on index.html - #5766 (#5767) 2026-07-12 12:25:23 -04:00
serve_index_test.go feat(ui): replace UI scrobble with reportPlayback and redesign NowPlaying panel (#5448) 2026-05-01 15:27:32 -04:00
server.go chore(deps): bump golangci-lint to v2.10.0 and suppress new gosec false positives 2026-02-17 09:28:42 -05:00
server_suite_test.go Rename log.LevelCritical to log.LevelFatal 2022-12-21 14:53:36 -05:00
server_test.go ci: run Go tests on Windows (#5380) 2026-04-19 13:16:47 -04:00
throttle_backlog.go chore: go fix 2026-05-28 22:13:05 -03:00
throttle_backlog_test.go fix(test): prevent flaky deadlock in throttle backlog test (#5474) 2026-05-06 11:03:11 -04:00