Documentation / Reference
Glossary
| Term | Meaning |
|---|---|
| Actor path | Stable identity of one actor, used in commands, ownership checks, and transaction participants. |
| Stream | Ordered event history for one stream name and version sequence. |
| Event | Immutable fact produced by a command and later replayed to reconstruct state. |
| Projection | Consumer that turns committed events into a read-oriented view. |
| Handoff | Durable marker or queue record connecting committed events to a projection consumer. |
| Operation ID | Stable identifier for one command attempt and its retries. |
| Request identity | Canonical SHA-256 digest of the original command identity and payload. |
| Participant | Actor/stream, expected version, and events included in one closed atomic batch. |
| Route fence | Route key, epoch, and deployment fingerprint checked during selected commit. |
| Completion receipt | Durable evidence of what committed for an operation. |
| Event-only closure | Bounded planning of causal subscriber events before a selected commit. |
| External-effect intent | Durable record of a side effect to perform after event commit with a stable idempotency key. |
| Broker journal | Durable evidence coordinating a KurrentDB write broker with SQL state. |
Follow selected command route for the full request path or recovery for retry semantics.
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Message identity terms
| Term | Meaning |
|---|---|
| Correlation ID | Groups a chosen user interaction or workflow for investigation. |
| Causation ID | Links a message to the message that directly caused it. |
| Message ID | Identifies a message/runtime dispatch within the correlation story. |
| User ID | Attributed user, bound to authenticated context at ingress. |
| Device ID | Originating device/session context under application policy. |
| Transaction ID | Troolio transaction context supplied by the command protocol. |
| Source actor ID | EventEnvelope.Id, the source actor key shared by its delivered events. |
| Projection inbox | Retained source-processing identity committed with the view update. |
| Refresh hint | Reference indicating that a client should make another authorized read. |
| Tombstone | Retained lifecycle evidence preventing delayed work from recreating a removed entry. |
Read message metadata and correlation and causation for examples, then idempotency and ordering for retry identity.