Google System Design Example | Real Interview Question

Problem

Design a music streaming service that handles catalog search, playlists, and adaptive audio playback

Initiate playback within 200 milliseconds for 80M concurrent listeners
Switch audio bitrates seamlessly when network conditions degrade mid-stream
Power personalized home feeds and full-text search without saturating the primary database

Key Test Points

Manifest-based adaptive delivery
Pre-computed recommendation cache
Asynchronously updated search index

1🎶 What is Spotify?Chapter 1

Spotify is a music streaming platform that gives users on-demand access to a catalog of over 100 million songs. Users search for music, build playlists, and receive personalized recommendations, while the platform delivers adaptive-quality audio through a global edge network.

2RequirementsChapter 2

3Data model designChapter 3

4API designChapter 4

5High-Level DesignChapter 5

6Deep divesChapter 6

7Other ConsiderationsChapter 7

8Interviewer expectationsChapter 8

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