Deduplication

Principles of content-addressable storage (CAS) and Merkle trees; focusing on cryptographic content hashing, sharding layouts, deduplication, and block-level verification.

A robust Java-based photo organization and migration engine featuring content-hash deduplication, a metadata-driven folder structure DSL with fallback chains, XMP sidecar discovery, parallel transfer pipelines, and multi-backend cloud targets.

Strategic practices for safe, idempotent, and efficient large-scale data migrations; incorporating reliable deduplication heuristics, checksum-based integrity validation, and seamless fallbacks.