Blob Storage

Content-addressed artifact storage.

Structure

blobs/
├── ab/
│   └── abcdef123456...
├── cd/
│   └── cdef789abc...
└── ef/
    └── efgh012def...

Content Addressing

Files named by their BLAKE3 hash:

• Automatic deduplication
• Corruption detection
• Efficient storage

Storage Format

Uses rkyv for zero-copy serialization:

struct CacheEntry {
    output_data: Vec<u8>,
    metadata: EntryMetadata,
}

Deduplication

Identical content stored once:

file1.o (hash: abc) ─┐
                     ├─→ blob:abc (stored once)
file2.o (hash: abc) ─┘

Cleanup

Garbage collection removes:

• Orphaned blobs
• Old entries
• Entries exceeding size limit