Documentation / Storage

File Format.

Feather uses a highly optimized .feather binary blob to persist vectors and graph edges directly to disk without a running server process.

The v0.5.0 Layout

Every Feather database file enforces a strict binary protocol that ensures safety and lightning-fast zero-copy reads via SIMD operations on supporting architectures.

OffsetStructure

0x00Magic Number0x46454154 ("FEAT")

0x04Version Blockv0.5.0 Header Size

0x08Global Dim Sizee.g. 384 or 768 (Int32)

0x12..Records / HNSW Edge BlockNode ID + Vector Data + Context Graph Edges