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Spring Boot 4 Microservices & REST APIs · Lesson

Health Indicators

Report application and dependency health.

The Health Endpoint

The /actuator/health endpoint reports whether the application and its dependencies are functioning. Load balancers and orchestrators poll it to decide if an instance should receive traffic.

GET /actuator/health
{ "status": "UP" }

Aggregated Status

Overall health is an aggregate of many health indicators. If any critical indicator reports DOWN, the overall status becomes DOWN. Statuses include UP, DOWN, and OUT_OF_SERVICE.

All lessons in this course

  1. Enabling Actuator Endpoints
  2. Health Indicators
  3. Custom Metrics with Micrometer
  4. Securing Actuator Endpoints
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