Enum GetReply 

pub enum GetReply<'a> {
    Bytes(Cow<'a, [u8]>),
    ArcBulk(Arc<Box<[u8]>>),
}

L1 return shape for Store::get_for_reply — lets the reactor’s reply path choose between memcpy (Bytes) and writev zero-copy (ArcBulk) off one keyspace lookup.

Variants

Bytes(Cow<'a, [u8]>)

Inline-encoded value — caller memcpys the bytes into its output Vec (small replies; encoding cost is tiny vs the RTT floor).

ArcBulk(Arc<Box<[u8]>>)

L1 (2026-06-21): Arc-backed bulk. The reactor’s reply path pushes the Arc into the conn’s output_arcs so the next writev iovec list points DIRECTLY at the value bytes — skipping the per-GET memcpy that valkey’s tryAvoidBulkStrCopyToReply likewise avoids.