pub const FAST_REQUEST_MAGIC: u8 = 0xFA;Expand description
Native fast-cache protocol, version 2.
Requests use an 8-byte raw-binary header:
[magic:u8, version:u8, command:u8, flags:u8, body_len:u32le].
Optional routing fields live at the start of the body when their flag bits
are set, followed by command-specific binary fields. Field order is:
key_hash:u64, route_shard:u32, key_tag:u64. RESP remains supported
separately by the server ingress path.