How to enable Spring Boot Actuator

Spring Boot Actuator provides many introspection and debugging features out of the box through a well defined REST endpoints. The below example shows how to enable Spring Boot Actuator by adding Maven POM dependency.

You should see the following output after starting SpringBoot application

2021-01-23 20:39:40.500  INFO 22524 --- [main] o.s.b.a.e.web.EndpointLinksResolver:
    Exposing 13 endpoint(s) beneath base path '/actuator'
2021-01-23 20:39:40.625  INFO 22524 --- [main] o.s.b.w.embedded.tomcat.TomcatWebServer:
    Tomcat started on port(s): 8080 (http) with context path ''
2021-01-23 20:39:40.655  INFO 22524 --- [main] com.example.demo.DemoApplication: 
    Started DemoApplication in 11.433 seconds (JVM running for 13.142)

Now you can access Actuator APIs as show below

http://localhost:8080/actuator/
http://localhost:8080/actuator/info
http://localhost:8080/actuator/env
http://localhost:8080/actuator/health
http://localhost:8080/actuator/beans
http://localhost:8080/actuator/caches
http://localhost:8080/actuator/loggers
http://localhost:8080/actuator/threaddump
http://localhost:8080/actuator/heapdump
http://localhost:8080/actuator/metrics
http://localhost:8080/actuator/scheduledtasks
http://localhost:8080/actuator/mappings