{
  "code": null,
  "collection": "architecture",
  "href": "https://banes-lab.com/ontology#architecture-layered-architecture",
  "id": "layered-architecture",
  "kind": "style",
  "layer": {
    "href": "https://banes-lab.com/ontology/schema#layer-structural-core",
    "json": "https://banes-lab.com/json/records/layer/structural-core",
    "label": "Structural Core",
    "markdown": "https://banes-lab.com/records/layer/structural-core.md",
    "ref": "layer:structural-core"
  },
  "name": "Layered Architecture",
  "ref": "architecture:layered-architecture",
  "relations": [
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-layer-separation",
          "json": "https://banes-lab.com/json/records/lexicon/layer-separation",
          "label": "Layer Separation",
          "markdown": "https://banes-lab.com/records/lexicon/layer-separation.md",
          "ref": "lexicon:layer-separation"
        }
      ],
      "relation": "requires"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-separation-of-concerns",
          "json": "https://banes-lab.com/json/records/architecture/separation-of-concerns",
          "label": "Separation of Concerns",
          "markdown": "https://banes-lab.com/records/architecture/separation-of-concerns.md",
          "ref": "architecture:separation-of-concerns"
        }
      ],
      "relation": "reinforces"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-structured-code-organization",
          "json": "https://banes-lab.com/json/records/lexicon/structured-code-organization",
          "label": "Structured Code Organization",
          "markdown": "https://banes-lab.com/records/lexicon/structured-code-organization.md",
          "ref": "lexicon:structured-code-organization"
        }
      ],
      "relation": "enables"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-layer-skipping",
          "json": "https://banes-lab.com/json/records/lexicon/layer-skipping",
          "label": "Layer Skipping",
          "markdown": "https://banes-lab.com/records/lexicon/layer-skipping.md",
          "ref": "lexicon:layer-skipping"
        }
      ],
      "relation": "conflicts-with"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-anemic-layers",
          "json": "https://banes-lab.com/json/records/lexicon/anemic-layers",
          "label": "Anemic Layers",
          "markdown": "https://banes-lab.com/records/lexicon/anemic-layers.md",
          "ref": "lexicon:anemic-layers"
        }
      ],
      "relation": "tensions-with"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/schema#tension-anemic-layers-layered-architecture",
          "json": "https://banes-lab.com/json/records/tension/anemic-layers-layered-architecture",
          "label": "Layered Architecture / Anemic Layers",
          "markdown": "https://banes-lab.com/records/tension/anemic-layers-layered-architecture.md",
          "ref": "tension:anemic-layers-layered-architecture"
        }
      ],
      "relation": "tensions"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-layer-skipping",
          "json": "https://banes-lab.com/json/records/lexicon/layer-skipping",
          "label": "Layer Skipping",
          "markdown": "https://banes-lab.com/records/lexicon/layer-skipping.md",
          "ref": "lexicon:layer-skipping"
        }
      ],
      "relation": "violated-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-move-behavior-to-its-owner",
          "json": "https://banes-lab.com/json/records/lexicon/move-behavior-to-its-owner",
          "label": "Move Behavior to Its Owner",
          "markdown": "https://banes-lab.com/records/lexicon/move-behavior-to-its-owner.md",
          "ref": "lexicon:move-behavior-to-its-owner"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-introduce-port",
          "json": "https://banes-lab.com/json/records/lexicon/introduce-port",
          "label": "Introduce Port",
          "markdown": "https://banes-lab.com/records/lexicon/introduce-port.md",
          "ref": "lexicon:introduce-port"
        }
      ],
      "relation": "refactored-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology/schema#vocabulary-severity-contextual",
          "json": "https://banes-lab.com/json/records/vocabulary/severity-contextual",
          "label": "contextual",
          "markdown": "https://banes-lab.com/records/vocabulary/severity-contextual.md",
          "ref": "vocabulary:severity-contextual"
        }
      ],
      "relation": "severity"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/ontology#architecture-category-codebase-system-architecture-styles",
          "json": "https://banes-lab.com/json/records/architecture-category/codebase-system-architecture-styles",
          "label": "Codebase / System Architecture Styles",
          "markdown": "https://banes-lab.com/records/architecture-category/codebase-system-architecture-styles.md",
          "ref": "architecture-category:codebase-system-architecture-styles"
        }
      ],
      "relation": "category"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/anatomy/governance#file-governance-rules-eslint-closure-no-cross-subsystem-import-eslint-rule-ts",
          "json": "https://banes-lab.com/json/source/governance/rules/eslint/closure-no-cross-subsystem-import.eslint.rule.ts",
          "label": "rules/eslint/closure-no-cross-subsystem-import.eslint.rule.ts",
          "markdown": "https://banes-lab.com/source/governance/rules/eslint/closure-no-cross-subsystem-import.eslint.rule.ts.md",
          "ref": "anatomy:file-governance-rules-eslint-closure-no-cross-subsystem-import-eslint-rule-ts"
        },
        {
          "href": "https://banes-lab.com/anatomy/governance#file-governance-rules-eslint-closure-no-type-layer-drift-eslint-rule-ts",
          "json": "https://banes-lab.com/json/source/governance/rules/eslint/closure-no-type-layer-drift.eslint.rule.ts",
          "label": "rules/eslint/closure-no-type-layer-drift.eslint.rule.ts",
          "markdown": "https://banes-lab.com/source/governance/rules/eslint/closure-no-type-layer-drift.eslint.rule.ts.md",
          "ref": "anatomy:file-governance-rules-eslint-closure-no-type-layer-drift-eslint-rule-ts"
        },
        {
          "href": "https://banes-lab.com/anatomy/governance#file-governance-rules-eslint-closure-no-undeclared-type-layer-eslint-rule-ts",
          "json": "https://banes-lab.com/json/source/governance/rules/eslint/closure-no-undeclared-type-layer.eslint.rule.ts",
          "label": "rules/eslint/closure-no-undeclared-type-layer.eslint.rule.ts",
          "markdown": "https://banes-lab.com/source/governance/rules/eslint/closure-no-undeclared-type-layer.eslint.rule.ts.md",
          "ref": "anatomy:file-governance-rules-eslint-closure-no-undeclared-type-layer-eslint-rule-ts"
        }
      ],
      "relation": "enforced-by"
    },
    {
      "links": [
        {
          "href": "https://banes-lab.com/software-architecture#the-layer-spine",
          "json": "https://banes-lab.com/json/software-architecture/model/the-layer-spine",
          "label": "The layer spine",
          "markdown": "https://banes-lab.com/software-architecture/model/the-layer-spine.md",
          "ref": "chapter:/software-architecture#the-layer-spine"
        },
        {
          "href": "https://banes-lab.com/software-architecture#the-direction-axis",
          "json": "https://banes-lab.com/json/software-architecture/model/the-direction-axis",
          "label": "The direction axis",
          "markdown": "https://banes-lab.com/software-architecture/model/the-direction-axis.md",
          "ref": "chapter:/software-architecture#the-direction-axis"
        },
        {
          "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/lexicon#lexicon-category-codebase-system-architecture-styles",
          "json": "https://banes-lab.com/json/ontology/lexicon/lexicon-category-codebase-system-architecture-styles",
          "label": "Codebase / System Architecture Styles",
          "markdown": "https://banes-lab.com/ontology/lexicon/lexicon-category-codebase-system-architecture-styles.md",
          "ref": "chapter:/ontology/lexicon#lexicon-category-codebase-system-architecture-styles"
        },
        {
          "href": "https://banes-lab.com/ontology/lexicon#lexicon-category-core-modular-design",
          "json": "https://banes-lab.com/json/ontology/lexicon/lexicon-category-core-modular-design",
          "label": "Core Modular Design",
          "markdown": "https://banes-lab.com/ontology/lexicon/lexicon-category-core-modular-design.md",
          "ref": "chapter:/ontology/lexicon#lexicon-category-core-modular-design"
        },
        {
          "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 convention of stacking presentation, application and persistence layers, each calling only the layer below it.",
  "siblings": {
    "next": {
      "href": "https://banes-lab.com/ontology#architecture-component-based-architecture",
      "json": "https://banes-lab.com/json/records/architecture/component-based-architecture",
      "label": "Component-Based Architecture",
      "markdown": "https://banes-lab.com/records/architecture/component-based-architecture.md",
      "ref": "architecture:component-based-architecture"
    },
    "previous": {
      "href": "https://banes-lab.com/ontology#architecture-clean-architecture",
      "json": "https://banes-lab.com/json/records/architecture/clean-architecture",
      "label": "Clean Architecture",
      "markdown": "https://banes-lab.com/records/architecture/clean-architecture.md",
      "ref": "architecture:clean-architecture"
    }
  },
  "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": [
    "N-Tier Architecture"
  ],
  "exemplar": {
    "after": "class FooController { constructor(private readonly service: FooService) {} }\nclass FooService { constructor(private readonly repository: FooRepository) {} }\nclass SqlFooRepository implements FooRepository { save(foo: Foo) { return fooTable.insert(foo); } }",
    "before": "function createFoo(request: Request) {\n  return sql.query(\"insert into foo values (?)\", JSON.parse(request.body));\n}",
    "lang": "ts",
    "medium": "code"
  },
  "formedBy": null,
  "scope": [
    "application",
    "system"
  ],
  "severity": "contextual"
}