27. Spotify
Medium
Design a music streaming service like Spotify
- Functional Requirements
- Users should be able to choose any song in Spotify's library and start playing it immediately
- Users should be able to save songs to playlists
- Each song should be attached to an album, and each album should have cover art
- Nonfunctional Requirements
- P99 Playback start - 1000ms
- High availibility
- Assumptions
- The top 1% of songs account for 90% of plays
- You do not need to worry about uploading songs
- Estimated Usage
- 430 Monthly Active Users
- 700k song plays per minute
- 100k songs uploaded per day
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