Design
Google Drive
Design a cloud file storage system like Google Drive supporting file upload, sync, sharing, versioning, and collaborative access.
This is a Low-Level Design (LLD) problem. New to LLD vs HLD? Start here.
01 - Why interviewers ask this
Cloud storage tests chunked upload/download plus permission modeling at scale — interviewers check that your design handles large files and sharing without naive whole-file transfers.
02 - Where this system exists in the real world
You interact with this design every day.
Google Drive / Dropbox / OneDrive cloud storage
Enterprise document management systems
Media asset management platforms
03 - What you'll master
Solve this once. Know it forever.
Design chunked upload/download for large files
Model file/folder sharing permissions
Reason about storage deduplication and versioning
04 - What you'll design
7 functional · 5 non-functional requirements.
Upload and download files of any type/size
6 more requirements inside
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05 - Companies that ask this
You may face this exact question in your next interview.
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