{
  "code": null,
  "collection": "architecture",
  "href": "https://banes-lab.com/ontology#architecture-domain-events",
  "id": "domain-events",
  "kind": "pattern",
  "layer": {
    "href": "https://banes-lab.com/ontology/schema#layer-execution-core",
    "json": "https://banes-lab.com/json/records/layer/execution-core",
    "label": "Execution Core",
    "markdown": "https://banes-lab.com/records/layer/execution-core.md",
    "ref": "layer:execution-core"
  },
  "name": "Domain Events",
  "ref": "architecture:domain-events",
  "relations": [
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-domain-model",
          "json": "https://banes-lab.com/json/records/architecture/domain-model",
          "label": "Domain Model",
          "markdown": "https://banes-lab.com/records/architecture/domain-model.md",
          "ref": "architecture:domain-model"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-event-semantics",
          "json": "https://banes-lab.com/json/records/lexicon/event-semantics",
          "label": "Event Semantics",
          "markdown": "https://banes-lab.com/records/lexicon/event-semantics.md",
          "ref": "lexicon:event-semantics"
        }
      ],
      "relation": "requires"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-domain-driven-design",
          "json": "https://banes-lab.com/json/records/architecture/domain-driven-design",
          "label": "Domain-Driven Design (DDD)",
          "markdown": "https://banes-lab.com/records/architecture/domain-driven-design.md",
          "ref": "architecture:domain-driven-design"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-event-driven-architecture",
          "json": "https://banes-lab.com/json/records/architecture/event-driven-architecture",
          "label": "Event-Driven Architecture",
          "markdown": "https://banes-lab.com/records/architecture/event-driven-architecture.md",
          "ref": "architecture:event-driven-architecture"
        }
      ],
      "relation": "reinforces"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-decoupled-domain-reactions",
          "json": "https://banes-lab.com/json/records/lexicon/decoupled-domain-reactions",
          "label": "Decoupled Domain Reactions",
          "markdown": "https://banes-lab.com/records/lexicon/decoupled-domain-reactions.md",
          "ref": "lexicon:decoupled-domain-reactions"
        }
      ],
      "relation": "enables"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-infrastructure-events-in-domain",
          "json": "https://banes-lab.com/json/records/lexicon/infrastructure-events-in-domain",
          "label": "Infrastructure Events in Domain",
          "markdown": "https://banes-lab.com/records/lexicon/infrastructure-events-in-domain.md",
          "ref": "lexicon:infrastructure-events-in-domain"
        }
      ],
      "relation": "conflicts-with"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-event-granularity",
          "json": "https://banes-lab.com/json/records/lexicon/event-granularity",
          "label": "Event Granularity",
          "markdown": "https://banes-lab.com/records/lexicon/event-granularity.md",
          "ref": "lexicon:event-granularity"
        }
      ],
      "relation": "tensions-with"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/schema#tension-domain-events-event-granularity",
          "json": "https://banes-lab.com/json/records/tension/domain-events-event-granularity",
          "label": "Domain Events / Event Granularity",
          "markdown": "https://banes-lab.com/records/tension/domain-events-event-granularity.md",
          "ref": "tension:domain-events-event-granularity"
        }
      ],
      "relation": "tensions"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-infrastructure-events-in-domain",
          "json": "https://banes-lab.com/json/records/lexicon/infrastructure-events-in-domain",
          "label": "Infrastructure Events in Domain",
          "markdown": "https://banes-lab.com/records/lexicon/infrastructure-events-in-domain.md",
          "ref": "lexicon:infrastructure-events-in-domain"
        }
      ],
      "relation": "violated-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-name-the-concept",
          "json": "https://banes-lab.com/json/records/lexicon/name-the-concept",
          "label": "Name the Concept",
          "markdown": "https://banes-lab.com/records/lexicon/name-the-concept.md",
          "ref": "lexicon:name-the-concept"
        }
      ],
      "relation": "refactored-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/schema#vocabulary-severity-recommended",
          "json": "https://banes-lab.com/json/records/vocabulary/severity-recommended",
          "label": "recommended",
          "markdown": "https://banes-lab.com/records/vocabulary/severity-recommended.md",
          "ref": "vocabulary:severity-recommended"
        }
      ],
      "relation": "severity"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-category-event-messaging-asynchronous-architecture",
          "json": "https://banes-lab.com/json/records/architecture-category/event-messaging-asynchronous-architecture",
          "label": "Event / Messaging / Asynchronous Architecture",
          "markdown": "https://banes-lab.com/records/architecture-category/event-messaging-asynchronous-architecture.md",
          "ref": "architecture-category:event-messaging-asynchronous-architecture"
        }
      ],
      "relation": "category"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-distributed-monolith",
          "json": "https://banes-lab.com/json/records/architecture/distributed-monolith",
          "label": "Distributed Monolith",
          "markdown": "https://banes-lab.com/records/architecture/distributed-monolith.md",
          "ref": "architecture:distributed-monolith"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-circular-dependency",
          "json": "https://banes-lab.com/json/records/architecture/circular-dependency",
          "label": "Circular Dependency",
          "markdown": "https://banes-lab.com/records/architecture/circular-dependency.md",
          "ref": "architecture:circular-dependency"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-independence",
          "json": "https://banes-lab.com/json/records/architecture/independence",
          "label": "Independence",
          "markdown": "https://banes-lab.com/records/architecture/independence.md",
          "ref": "architecture:independence"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-autonomy",
          "json": "https://banes-lab.com/json/records/architecture/autonomy",
          "label": "Autonomy",
          "markdown": "https://banes-lab.com/records/architecture/autonomy.md",
          "ref": "architecture:autonomy"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-microservices",
          "json": "https://banes-lab.com/json/records/architecture/microservices",
          "label": "Microservices",
          "markdown": "https://banes-lab.com/records/architecture/microservices.md",
          "ref": "architecture:microservices"
        }
      ],
      "relation": "refactors"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-event-sourcing",
          "json": "https://banes-lab.com/json/records/architecture/event-sourcing",
          "label": "Event Sourcing",
          "markdown": "https://banes-lab.com/records/architecture/event-sourcing.md",
          "ref": "architecture:event-sourcing"
        }
      ],
      "relation": "required-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/software-architecture/principles#execution-joins-the-halves",
          "json": "https://banes-lab.com/json/software-architecture/principles/execution-joins-the-halves",
          "label": "Execution joins the halves",
          "markdown": "https://banes-lab.com/software-architecture/principles/execution-joins-the-halves.md",
          "ref": "chapter:/software-architecture/principles#execution-joins-the-halves"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-category-anti-patterns",
          "json": "https://banes-lab.com/json/ontology/principles/architecture-category-anti-patterns",
          "label": "Anti-patterns",
          "markdown": "https://banes-lab.com/ontology/principles/architecture-category-anti-patterns.md",
          "ref": "chapter:/ontology#architecture-category-anti-patterns"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-category-domain-architecture",
          "json": "https://banes-lab.com/json/ontology/principles/architecture-category-domain-architecture",
          "label": "Domain Architecture",
          "markdown": "https://banes-lab.com/ontology/principles/architecture-category-domain-architecture.md",
          "ref": "chapter:/ontology#architecture-category-domain-architecture"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-category-core-modular-design",
          "json": "https://banes-lab.com/json/ontology/principles/architecture-category-core-modular-design",
          "label": "Core Modular Design",
          "markdown": "https://banes-lab.com/ontology/principles/architecture-category-core-modular-design.md",
          "ref": "chapter:/ontology#architecture-category-core-modular-design"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-category-event-messaging-asynchronous-architecture",
          "json": "https://banes-lab.com/json/ontology/principles/architecture-category-event-messaging-asynchronous-architecture",
          "label": "Event / Messaging / Asynchronous Architecture",
          "markdown": "https://banes-lab.com/ontology/principles/architecture-category-event-messaging-asynchronous-architecture.md",
          "ref": "chapter:/ontology#architecture-category-event-messaging-asynchronous-architecture"
        },
        {
          "href": "https://banes-lab.com/ontology#architecture-category-codebase-system-architecture-styles",
          "json": "https://banes-lab.com/json/ontology/principles/architecture-category-codebase-system-architecture-styles",
          "label": "Codebase / System Architecture Styles",
          "markdown": "https://banes-lab.com/ontology/principles/architecture-category-codebase-system-architecture-styles.md",
          "ref": "chapter:/ontology#architecture-category-codebase-system-architecture-styles"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-category-core-vocabulary",
          "json": "https://banes-lab.com/json/ontology/lexicon/lexicon-category-core-vocabulary",
          "label": "Core Vocabulary",
          "markdown": "https://banes-lab.com/ontology/lexicon/lexicon-category-core-vocabulary.md",
          "ref": "chapter:/ontology/lexicon#lexicon-category-core-vocabulary"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-category-event-messaging-async",
          "json": "https://banes-lab.com/json/ontology/lexicon/lexicon-category-event-messaging-async",
          "label": "Event Messaging Async",
          "markdown": "https://banes-lab.com/ontology/lexicon/lexicon-category-event-messaging-async.md",
          "ref": "chapter:/ontology/lexicon#lexicon-category-event-messaging-async"
        },
        {
          "href": "https://banes-lab.com/ontology/schema#the-vocabulary-severity",
          "json": "https://banes-lab.com/json/ontology/schema/the-vocabulary-severity",
          "label": "Severity levels",
          "markdown": "https://banes-lab.com/ontology/schema/the-vocabulary-severity.md",
          "ref": "chapter:/ontology/schema#the-vocabulary-severity"
        },
        {
          "href": "https://banes-lab.com/ontology/schema#the-resolutions",
          "json": "https://banes-lab.com/json/ontology/schema/the-resolutions",
          "label": "The resolutions",
          "markdown": "https://banes-lab.com/ontology/schema/the-resolutions.md",
          "ref": "chapter:/ontology/schema#the-resolutions"
        }
      ],
      "relation": "linked-from"
    }
  ],
  "summary": "A design pattern that records each significant change in the domain as an event named in the domain's language.",
  "siblings": {
    "next": {
      "href": "https://banes-lab.com/ontology#architecture-integration-events",
      "json": "https://banes-lab.com/json/records/architecture/integration-events",
      "label": "Integration Events",
      "markdown": "https://banes-lab.com/records/architecture/integration-events.md",
      "ref": "architecture:integration-events"
    },
    "previous": {
      "href": "https://banes-lab.com/ontology#architecture-command-query-responsibility-segregation",
      "json": "https://banes-lab.com/json/records/architecture/command-query-responsibility-segregation",
      "label": "Command Query Responsibility Segregation (CQRS)",
      "markdown": "https://banes-lab.com/records/architecture/command-query-responsibility-segregation.md",
      "ref": "architecture:command-query-responsibility-segregation"
    }
  },
  "up": {
    "href": null,
    "json": "https://banes-lab.com/json/api/records/architecture",
    "label": "Architecture principles",
    "markdown": "https://banes-lab.com/api/records/architecture.md",
    "ref": "api:records/architecture"
  },
  "aliases": [],
  "exemplar": {
    "after": "class Foo {\n  #events: FooDomainEvent[] = [];\n  rename(name: string) {\n    this.name = name;\n    this.#events.push({ type: \"FooRenamed\", fooId: this.id, name });\n  }\n}",
    "before": "class Foo {\n  rename(name: string) { this.name = name; }\n}",
    "lang": "ts",
    "medium": "code"
  },
  "formedBy": null,
  "scope": [
    "domain",
    "bounded context"
  ],
  "severity": "recommended"
}
