Deluan Quintão 0faf744e32 refactor: make NowPlaying dispatch asynchronous with worker pool (#4757)
* feat: make NowPlaying dispatch asynchronous with worker pool

Implemented asynchronous NowPlaying dispatch using a queue worker pattern similar to cacheWarmer. Instead of dispatching NowPlaying updates synchronously during the HTTP request, they are now queued and processed by background workers at controlled intervals.

Key changes:
- Added nowPlayingEntry struct to represent queued entries
- Added npQueue map (keyed by playerId), npMu mutex, and npSignal channel to playTracker
- Implemented enqueueNowPlaying() to add entries to the queue
- Implemented nowPlayingWorker() that polls every 100ms, drains queue, and processes entries
- Changed NowPlaying() to queue dispatch instead of calling synchronously
- Renamed dispatchNowPlaying() to dispatchNowPlayingAsync() and updated it to use background context

Benefits:
- HTTP handlers return immediately without waiting for scrobbler responses
- Deduplication by key: rapid calls (seeking) only dispatch latest state
- Fire-and-forget: one-shot attempts with logged failures
- Backpressure-free: worker processes at its own pace
- Tests updated to use Eventually() assertions for async dispatch

Signed-off-by: Deluan <deluan@navidrome.org>

* fix(play_tracker): increase timeout duration for signal handling

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor(play_tracker): simplify queue processing by directly assigning entries

Signed-off-by: Deluan <deluan@navidrome.org>

---------

Signed-off-by: Deluan <deluan@navidrome.org>
2025-12-01 22:21:54 -05:00
2025-06-28 20:01:47 -04:00
2020-01-22 14:48:38 -05:00

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Navidrome Music Server  Tweet

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Navidrome is an open source web-based music collection server and streamer. It gives you freedom to listen to your music collection from any browser or mobile device. It's like your personal Spotify!

Note: The master branch may be in an unstable or even broken state during development. Please use releases instead of the master branch in order to get a stable set of binaries.

Check out our Live Demo!

Any feedback is welcome! If you need/want a new feature, find a bug or think of any way to improve Navidrome, please file a GitHub issue or join the discussion in our Subreddit. If you want to contribute to the project in any other way (ui/backend dev, translations, themes), please join the chat in our Discord server.

Installation

See instructions on the project's website

Cloud Hosting

PikaPods has partnered with us to offer you an officially supported, cloud-hosted solution. A share of the revenue helps fund the development of Navidrome at no additional cost for you.

PikaPods

Features

  • Handles very large music collections
  • Streams virtually any audio format available
  • Reads and uses all your beautifully curated metadata
  • Great support for compilations (Various Artists albums) and box sets (multi-disc albums)
  • Multi-user, each user has their own play counts, playlists, favourites, etc...
  • Very low resource usage
  • Multi-platform, runs on macOS, Linux and Windows. Docker images are also provided
  • Ready to use binaries for all major platforms, including Raspberry Pi
  • Automatically monitors your library for changes, importing new files and reloading new metadata
  • Themeable, modern and responsive Web interface based on Material UI
  • Compatible with all Subsonic/Madsonic/Airsonic clients
  • Transcoding on the fly. Can be set per user/player. Opus encoding is supported
  • Translated to various languages

Translations

Navidrome uses POEditor for translations, and we are always looking for more contributors

Documentation

All documentation can be found in the project's website: https://www.navidrome.org/docs. Here are some useful direct links:

Screenshots

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