[DIFF] Automatic data tiering — hot/warm/cold storage based on access frequency

[ElioNeto]

Differentiator

Enterprise feature where data automatically moves between memory (hot), SSD (warm), and object storage (cold) based on access patterns.

Configuration

tiering:
hot: type: memory, max_size: 1GB, ttl: 1h
warm: type: ssd, compression: lz4, ttl: 30d
cold: type: s3, bucket: my-bucket, compression: zstd

Impact

• Dramatically reduces storage costs
• Petabyte-scale on minimal SSD
• Unique competitive advantage

[ElioNeto]

Implemented in commit 0871d91.