timothyandClaude Opus 4.8
2281f2e764
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Two concurrent adds of the same item both membership-check it absent, both insert the CollectionItem composite key, and the loser's SaveChangesForcingVersion threw an uncaught DbUpdateException (SQLite 19 / MySQL 1062) -> 500. Now the loser is an idempotent no-op. - ConcurrencyExtensions.TrySaveChangesForcingVersion: bool-returning sibling that catches only a classified unique/PK violation and returns false. - 10 single-item Add*ToCollection handlers: return Unit.Default (no-op, skip fan-out) on false — the racing winner already inserted + rotated + rebuilt. - Bulk AddItemsToCollection: retry on a fresh context against recomputed membership so a partial-overlap collision doesn't drop the non-colliding items (bounded loop; common no-collision path runs once). - Provider detection via a TvContext.IsUniqueConstraintViolation static delegate (matches the existing IsSqlite/LastInsertedRowId provider seam), wired from Startup to SqliteErrorClassifier / MySqlErrorClassifier. - Add*ToPlaylist is NOT affected (PlaylistItem has its own identity PK; a playlist may legitimately contain the same item more than once). Tests: a negative-control anchor proves the race genuinely throws a classified exception; end-to-end handler tests reproduce a real cross-connection race via a shared-cache SQLite harness + a SavingChanges interceptor (the single-conn in-memory fixture cannot). Every fix-dependent test verified to fail with the catch disabled. Docs: api-conventions.md §7a (idempotent insert under concurrency) + decisions/optimistic-concurrency.md. fixes #308 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
ErsatzTV
ErsatzTV lets you transform your media library into a personalized, live TV experience - complete with EPG, channel scheduling, and seamless streaming to all your devices. Rediscover your content, your way.
How It Works
- Install ErsatzTV: Download and set up the server on your system.
- Add Your Media: Connect your media libraries and collections.
- Create Channels: Design and schedule your own live channels.
- Stream Anywhere: Watch on any device with IPTV and EPG support.
Key Features
- Custom channels: Create and schedule your own live TV channels.
- IPTV & EPG: Stream with IPTV and Electronic Program Guide support.
- Hardware Transcoding: High-performance streaming with hardware acceleration (NVENC, QSV, VAAPI, AMF, VideoToolbox)
- Media Server Integration: Connect Plex, Jellyfin, Emby and more.
- Music & Subtitles: Mix music videos and enjoy subtitle support.
- Open Source: Free, open, and community-driven project.
Documentation
Documentation is available at ersatztv.org.
License
This project is inspired by pseudotv-plex and the dizquetv fork and is released under the zlib license.