Module cold_storage 

Cold storage tier management for archiving infrequently accessed blocks.

This module provides a policy-driven system for managing four storage tiers:

• Hot: frequently accessed, in-memory or fast SSD
• Warm: infrequent access, on-disk
• Cold: archival, compressed, slow access
• Frozen: immutable archive

Blocks are automatically migrated between tiers based on age and access recency.

Structs

ColdStorageManager

Policy-driven manager that tracks blocks across four storage tiers and migrates them according to access recency.

ColdStorageStats

Aggregate statistics for the cold-storage manager.

TierPolicy

Policy controlling when blocks graduate to colder tiers.

TieredBlock

Metadata record for a single block tracked by the cold-storage manager.

Enums

StorageTier

The four storage tiers, ordered from hottest (fastest/most expensive) to coldest (slowest/cheapest).

Functions

fnv1a_cold

Compute FNV-1a 64-bit hash of a byte slice.