Scalable Cloud File Synchronization System

Scalable Cloud File Storage and Synchronization System

Design a high-performance, scalable file storage service similar to Google Drive or Dropbox. The system must support millions of users, handle files up to 5GB in size, and ensure cross-device synchronization. Key focus areas should include efficient handling of large file uploads over unreliable networks, a robust metadata management strategy that ensures data integrity for shared folders, and a notification mechanism for real-time sync updates. Discuss your choices for storage durability, consistency models for metadata, and how you would optimize for both storage costs and global latency.
S3PostgreSQLRedisSQSKubernetesCDNAES-256TLSSHA-256WebSockets
00
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Scalable Cloud File Synchronization System

Design a globally distributed cloud storage and file synchronization service similar to Dropbox. The system must support millions of users, handle file versioning, and efficiently synchronize changes across multiple devices (Desktop, Mobile, Web). Key challenges include optimizing bandwidth for large file updates, ensuring strong consistency for metadata, and handling high-concurrency synchronization notifications. Discuss your strategy for block-level deduplication, data durability, and conflict resolution in a distributed environment.
PostgreSQLRedisS3KafkaCDNJWTgRPCSHA-256HTTP Long Polling
11
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