Actuator endpoints overview in Spring Boot - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of Spring Boot Actuator endpoints?

Spring Boot Actuator endpoints provide ready-made HTTP endpoints to monitor and manage your application, such as checking health, metrics, and configuration details.

beginner

Name three common Actuator endpoints and their uses.

/health: Shows application health status.<br>/metrics: Displays various metrics like memory and CPU usage.<br>/info: Provides custom application information.

intermediate

How do you enable all Actuator endpoints in a Spring Boot application?

Set management.endpoints.web.exposure.include=* in application.properties or application.yml to expose all endpoints over HTTP.

intermediate

What security considerations should you keep in mind with Actuator endpoints?

Actuator endpoints can expose sensitive data. Always secure them using authentication and limit exposure to trusted users or networks.

beginner

Explain the difference between 'health' and 'info' Actuator endpoints.

/health shows the current health status of the app (like UP or DOWN).<br>/info shows static or custom information about the app, like version or build details.

Which Actuator endpoint shows the current health status of the application?

A /env

B /metrics

C /info

D /health

The /health endpoint provides the current health status like UP or DOWN.

How do you expose all Actuator endpoints over HTTP?

A management.endpoints.web.exposure.include=*

B spring.actuator.enabled=true

C management.endpoint.all.enabled=true

D spring.boot.actuator.expose=all

Setting management.endpoints.web.exposure.include=* exposes all endpoints.

Which endpoint would you use to see JVM memory usage?

A /info

B /health

C /metrics

D /loggers

/metrics shows JVM memory and other performance metrics.

Why should Actuator endpoints be secured?

A They can expose sensitive information

B They require a database connection

C They only work with security enabled

D They slow down the app if unsecured

Unsecured endpoints may reveal sensitive data about the app.

Which Actuator endpoint provides custom application details like version or build info?

A /health

B /info

C /metrics

D /beans

/info is used to show custom app information.

Describe the main Actuator endpoints and what information each provides.

Think about monitoring app health, performance data, and app info.

Explain how to safely expose Actuator endpoints in a production Spring Boot app.

Consider both enabling endpoints and protecting them.