Spring Boot 3

Spring Boot 3 Health API

Application and component health indicators

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OpenAPI Specification

openapi: 3.1.0
info:
  title: Spring Boot 3 Actuator Environment Health API
  description: Production-ready monitoring and management endpoints provided by Spring Boot 3 Actuator. Includes health checks, Micrometer metrics, environment inspection, logger configuration, thread dumps, scheduled tasks, HTTP exchange tracing, and more. Endpoints are served under the /actuator base path and can be secured via Spring Security.
  version: 3.2.0
  contact:
    name: Spring Team
    url: https://spring.io/team
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://localhost:8080/actuator
  description: Local Spring Boot 3 application with Actuator enabled
tags:
- name: Health
  description: Application and component health indicators
paths:
  /health:
    get:
      operationId: getHealth
      summary: Get Application Health
      description: Returns the overall health status of the application. Aggregates all registered HealthIndicators. When security is enabled, full details are only shown to authorized users.
      tags:
      - Health
      responses:
        '200':
          description: Application is healthy
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HealthResponse'
        '503':
          description: Application is unhealthy or in OUT_OF_SERVICE state
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HealthResponse'
  /health/{component}:
    get:
      operationId: getHealthComponent
      summary: Get Component Health
      description: Returns the health status of a specific component (e.g., db, diskSpace, redis, rabbit, kafka).
      tags:
      - Health
      parameters:
      - name: component
        in: path
        required: true
        description: Health component name (e.g., db, diskSpace, redis)
        schema:
          type: string
          example: db
      responses:
        '200':
          description: Component health status
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ComponentHealth'
        '404':
          description: Component not found
components:
  schemas:
    ComponentHealth:
      type: object
      description: Health status of a single component
      properties:
        status:
          type: string
          description: Component status
          enum:
          - UP
          - DOWN
          - OUT_OF_SERVICE
          - UNKNOWN
        details:
          type: object
          description: Additional component-specific health details
          additionalProperties: true
        components:
          type: object
          description: Nested component health (for composite indicators)
          additionalProperties:
            $ref: '#/components/schemas/ComponentHealth'
    HealthResponse:
      type: object
      description: Overall application health aggregating all health indicators
      properties:
        status:
          type: string
          description: Overall health status
          enum:
          - UP
          - DOWN
          - OUT_OF_SERVICE
          - UNKNOWN
        components:
          type: object
          description: Health status of individual components
          additionalProperties:
            $ref: '#/components/schemas/ComponentHealth'

Spring Boot 3 Health API

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