CryBase::CouchBase::Services::KV::Request

One outbound packet for the KV service, as a pure value type. RequestBuffer.make serializes it; RequestWriter#write sends it.

req = KV::Request.new(KV::Opcode::Get, key: "hello")
req.opcode    # => KV::Opcode::Get
req.key       # => "hello"
req.opaque    # => 0_u32
req.to_buffer # => Bytes

The fields:

• opcode — the command code (Opcode::Get, ::Set, etc.)
• key — the document/operation key, as UTF-8 text or already encoded binary key bytes
• extras — opcode-specific bytes that precede the body
• value — the document/operation body
• cas — compare-and-swap token, or 0 for "any"
• opaque — caller-controlled echo field; the server returns it verbatim in the response
• vbucket — key partition id used by document operations