Module command_trace 

Command tracing for debugging and observability.

This module provides a lightweight per-command trace ring buffer that records:

• The command that was applied
• Pre and post state digests
• Events generated
• Context values used in decision-making

This enables debugging by observing “input command -> output events” per request.

Structs

CommandTiming

Timing breakdown for command processing.

CommandTraceRecord

A single command trace record capturing the full context of a command execution.

CommandTraceRecordBuilder

Builder for creating CommandTraceRecord instances

CommandTraceStore

Store for command trace records with a ring buffer implementation.

EngineStateDigest

Deterministic digest of engine state for comparison.

SymbolSummary

Summary of a single symbol’s orderbook state.

Enums

JournalStatus

Journal status for a command trace record.

Constants

DEFAULT_CAPACITY 🔒

Default capacity for the command trace store ring buffer.