What is actuator in Spring boot?

Spring boot actuator is one of the important features of Spring boot. It is used to access the current state of running applications in a production environment. There are various metrics that you can use to check the current state of the application.

Spring boot actuator provides restful web services end points which you can simply use and check various metrics. For example, /metrics end point will display metrics such as free memory, processors, uptime, and other properties.

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