Design Google Drive at scale — requirements, capacity, and trade-offs.
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hardSystem Design
How would you design Google Drive?
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01
Understand the problem
system-designcase-study
02
Attempt it yourself
Sketch your approach before reading the solution — that's what interviews test.
Nudge consolestandby
Stuck? Beam a request up — the console returns a conceptual nudge that guides your logic without spoiling the implementation.
03
Study the solution
Design Google Drive
Drive needs large file sync, conflict resolution, and offline.
| Piece | Pattern |
|---|---|
| Chunking | 4MB blocks + SHA-256 per chunk; only changed blocks uploaded |
| Sync | Differential Sync (Neil Fraser) — diff local vs server, 3-way merge |
| Storage | S3 multipart + |
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Dossier 87 of 99 decoded in the System Design track. One more won't hurt.