Admin
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"Listening time this week" summed the full duration of every track whose
stream ticket was issued, so pressing play and skipping counted the whole
song. Playback is now measured on the client and reported to the API.
Backend:
- ListeningHistory gains PlayedSeconds, LastProgressAt and IsCounted
(migration TrackPlayedSeconds marks existing rows as counted).
- /tracks/{id}/stream returns a listenId; new
PUT /tracks/listens/{listenId}/progress stores the accumulated seconds,
capped by track duration and elapsed wall-clock time, monotonic and
owner-only.
- A listen counts once it reaches min(30s, 50% of the track). Weekly
stats, streak, recent history/albums, mixes and listensCount only use
counted listens; seconds sum PlayedSeconds.
- ListeningHistoryCleanupJob (daily) deletes uncounted listens older
than 8 days.
web-player:
- ListenTracker accumulates played time (seeks are ignored) and flushes
on pause, track change, ended, every 30s, and on pagehide.
- Proxy route /api/listens/[id]/progress; repeat starts a new listen per
loop.
Musify
A music streaming app. Upload your own tracks, organize them into playlists and albums, and stream them back with a web player built around your listening habits: auto-generated mixes, a home feed, search, likes, and an Explore page for finding something new.
What it does
- Upload and organize your own music: tracks, albums, cover art, artist credits.
- Playlists, likes, and a "recently played" history.
- Mixes, playlists generated automatically from what you actually listen to.
- Explore, genre browsing and search across tracks, albums, playlists and people.
- Real streaming, not just file downloads: seek, queue, shuffle, repeat.
- Accounts via OIDC login, with an optional anonymous listening mode.
- Light and dark themes, and a layout that works on both desktop and mobile.
How it's built
Backend: .NET 10, split into a REST API, a background worker, and a dedicated streaming gateway.
- Clean architecture (Domain / Application / Infrastructure) with CQRS (Mediator) and
ErrorOrresults. - PostgreSQL via EF Core for metadata. RabbitMQ and MassTransit handle async processing (audio transcoding, thumbnails) with saga-based rollback.
- SeaweedFS (S3-compatible) for file storage. Uploads and downloads go straight between the client and storage, never through the API.
- ffmpeg for audio transcoding, ImageSharp for thumbnails.
- A YARP reverse proxy that streams the audio and checks a signed, short-lived ticket on every request.
- Zitadel for login (OIDC/OAuth2).
Web client: SvelteKit 2 on Svelte 5 (runes), TypeScript, Tailwind 4. The session lives on the server, so the backend access token never reaches the browser.
Infrastructure: Musify's own apps run from Docker Compose (dev and
production overlays). Postgres, RabbitMQ, SeaweedFS, Zitadel and Jaeger are
shared infrastructure that lives in a separate Infrastructure git
repository, used by Musify and by other projects that need the same OIDC
provider and object storage.
Project layout
backend/ .NET solution: Api, Worker, StreamingGateway, and the shared Domain/Application/Infrastructure
web-player/ the SvelteKit web client
deploy/ Docker Compose stacks for dev and production
docs/ architecture notes, one file per area
Postgres, Zitadel, SeaweedFS, RabbitMQ and Jaeger are not part of this
layout. They live in the separate Infrastructure repository instead.
Digging deeper
docs/ covers how each piece works and why: architecture, authentication, storage, streaming, media processing, and the local dev setup. deploy/README.md has the full instructions for running the stack, in development or on a production server.