# Performance Architecture & Optimization
Rivox is engineered in Rust for minimal overhead:
- **Near-Zero Coordination Overhead**: Graph evaluation and lockfile verification add $<50\text{ms}$ execution latency.
- **Subtree Cache Granularity (RFC-001)**: Merkle subtree hashing ensures $\ge 90\%$ cache hit rates across monorepos.
- **Zero-Copy Reconstitution (RFC-002)**: Hard-link file blob restoration eliminates file copy overhead on supported filesystems.
See also: [benchmark.md](benchmark.md), [cas.md](cas.md).