Why monitoring matters in Spring Boot - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable basic actuator endpoints in a Spring Boot application.

Spring Boot

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
    [1]
}

Drag options to blanks, or click blank then click option'

Aimplementation 'org.springframework.boot:spring-boot-starter-actuator'

Bimplementation 'org.springframework.boot:spring-boot-starter-data-jpa'

Cimplementation 'org.springframework.boot:spring-boot-starter-security'

Dimplementation 'org.springframework.boot:spring-boot-starter-thymeleaf'

Attempts:

3 left

💡 Hint

Common Mistakes

Adding unrelated dependencies like JPA or Thymeleaf instead of actuator.

The actuator starter adds monitoring endpoints to your Spring Boot app.

2fill in blank

medium

Complete the property to expose all actuator endpoints over HTTP.

Spring Boot

management.endpoints.web.exposure.include=[1]

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Ametrics

Binfo

Chealth

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Exposing only one endpoint like 'health' or 'info' when all are needed.

Using '*' exposes all actuator endpoints for monitoring.

3fill in blank

hard

Fix the error in the code to create a custom health indicator bean.

Spring Boot

@Component
public class CustomHealthIndicator implements HealthIndicator {
    @Override
    public Health health() {
        return Health.[1]().withDetail("status", "All good").build();
    }
}

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Aup

Bunknown

Cdown

DoutOfService

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'down()' or 'unknown()' which indicate problems.

The 'up()' method indicates the service is healthy.

4fill in blank

hard

Fill both blanks to configure a custom endpoint path and enable it.

Spring Boot

management.endpoints.web.base-path=[1]
management.endpoint.health.enabled=[2]

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A/monitoring

Btrue

Cfalse

D/api

Attempts:

3 left

💡 Hint

Common Mistakes

Using a path without '/' or disabling the endpoint accidentally.

Setting base-path to '/monitoring' changes the URL prefix.
Enabling health endpoint with 'true' makes it accessible.

5fill in blank

hard

Fill all three blanks to create a REST controller that returns application health status.

Spring Boot

import org.springframework.web.bind.annotation.[1];

@RestController
public class HealthController {

    private final HealthEndpoint healthEndpoint;

    public HealthController(HealthEndpoint healthEndpoint) {
        this.healthEndpoint = healthEndpoint;
    }

    @[2]("/custom-health")
    public Health health() {
        return healthEndpoint.[3]();
    }
}

Drag options to blanks, or click blank then click option'

AGetMapping

BRequestMapping

CGetHealth

DGet

Ehealth

Attempts:

3 left

💡 Hint

Common Mistakes

Using RequestMapping without specifying method=GET.

Incorrect method name on HealthEndpoint.

Import and annotate with @GetMapping for a GET endpoint.
Call health() on HealthEndpoint to get the status.