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Media players · Music and podcasts

Spotify-style app

Illustrative system design for a music and podcasts app like Spotify: 5 topics to read, from requirements to deep dives.

Playback that must not stall when the network does.

Illustrative design, not Spotify’s actual implementation. Arrowbox is not affiliated with Spotify’s owner. Disclaimer

Start with Search Sign in to start readingUpdated 2 Oct 2026

Discover

  • Catalog searchIntermediate · 46 min read · Sign in to read

    One query, many kinds of result: a blended top result, filter chips and play straight from results.

Listen

  • Audio player and queueIntermediate · 45 min read · Sign in to read

    A player that survives navigation, plays gaplessly and lets you edit what plays next.

  • Play on another deviceAdvanced · 45 min read · Sign in to read

    Move playback to a phone or speaker and keep every open client's controls in sync.

Library

  • PlaylistsIntermediate · 45 min read · Sign in to read

    Build and reorder a long playlist with optimistic edits that survive a collaborator's changes.

  • Offline downloadsAdvanced · 43 min read · Sign in to read

    Download playlists within a storage budget, play them offline and resync when back online.