seniorSpring
What is Spring Boot health check customization using Actuator?
Updated May 17, 2026
Short answer
Actuator allows custom health indicators to monitor application and dependency status.
Deep explanation
Spring Boot Actuator provides HealthIndicator interface to define custom health checks for services like databases, message queues, or external APIs. These checks integrate into /health endpoint and support UP, DOWN, and OUT_OF_SERVICE states.
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