Module command 

Command and response types. Command and response types for the Kōra engine.

Command is the parsed, type-safe representation of every operation the engine supports — strings, lists, sets, hashes, sorted sets, streams, HyperLogLog, bitmaps, geo, vectors, pub/sub, transactions, and server management. The protocol crate parses raw RESP frames into Command variants, and the shard engine pattern-matches on them for execution.

CommandResponse is the corresponding output type. Variants map directly to RESP wire types (simple string, error, integer, bulk string, array, nil) plus a BulkStringShared variant that allows zero-copy responses via Arc<[u8]>.

Helper methods on Command (key(), is_multi_key(), is_mutation(), cmd_type()) drive the engine’s routing and WAL logic.

Structs

BitFieldEncoding

Integer encoding used by BITFIELD subcommands.

Enums

BitFieldOffset

Offset format used by BITFIELD subcommands.

BitFieldOperation

A parsed BITFIELD subcommand.

BitFieldOverflow

Overflow behavior for BITFIELD mutation operations.

BitOperation

Bitwise operation for BITOP command.

Command

A parsed command ready for execution by a shard.

CommandResponse

Response from executing a command on a shard.

DocUpdateMutation

One DOC.UPDATE mutation operation.

GeoUnit

Distance unit for geo commands.

Constants

COMMAND_HELP_LINES

Human-readable help text for the COMMAND HELP reply.

SUPPORTED_COMMAND_NAMES

Canonical supported command names exposed by COMMAND LIST.

Functions

command_docs_response

Build a COMMAND DOCS response.

command_help_response

Build a COMMAND HELP response.

command_info_response

Build a COMMAND INFO/COMMAND response.

command_list_response

Build a COMMAND LIST response.

supported_command_count

Returns the number of supported command names.