dynamic-consistency-boundary

Selector-based consistency unit whose scope is determined per Command. See Concepts: Dynamic Consistency Boundary.

Fields

Field	Required	Description
apiVersion	yes	schema.esdm.io/core/v1
kind	yes	dynamic-consistency-boundary
name	yes	The DCB name.
scope	yes	scope.boundedContext reference.
identifiedBy	yes	Non-empty list of identifier components.
consults	yes	Non-empty list of Event references the DCB consults.
invariants	no	Named rules over the consulted state.
description	no	Free-form prose.
metadata	no	Non-semantic labels and annotations.

identifiedBy[]

Each component carries a name and a discriminated source.

source	Sibling field	Description
command-payload	field	Value taken from the triggering Command's data.
static	value	Fixed identifier string.
generated	generator	Value produced by a named strategy (uuid, ulid, ...).

The state source available on aggregate.identifiedBy is intentionally absent here – DCBs have no container-level state.

consults[]

Each entry references an Event the DCB takes into account when forming its decision state, plus a prose criteria describing which occurrences are relevant.

Field	Required	Description
boundedContext	yes	The Bounded Context the Event lives in.
aggregate	when the Event is Aggregate-bound	The Aggregate that owns the Event. Omit for free-standing BC-scoped Events.
event	yes	The Event name.
criteria	yes	Prose description of which occurrences the DCB consults.

Example

apiVersion: schema.esdm.io/core/v1
kind: dynamic-consistency-boundary
name: course-enrollment-cap
scope:
  domain: school
  boundedContext: enrollment
identifiedBy:
  - name: courseId
    source: command-payload
    field: courseId
consults:
  - boundedContext: enrollment
    aggregate: enrollment
    event: enrollment-recorded
    criteria: All `enrollment-recorded` events with the same `courseId`.
invariants:
  - name: at-most-thirty-students
    rule: A course may have at most 30 enrolled students.