The best practice of Spring Boot Starter Actuator

Spring Boot Starter Actuator is an open source library provided by Spring Boot to monitor and manage applications.It provides developers with a series of endpoints (Endpoints) for viewing the operating status, performance indicators and health status of the application, and can access these endpoints through HTTP or JMX. This article will introduce the best practice of using Spring Boot Starter Actuator, including the following aspects: 1. Add dependencies: First of all, we need to add Spring Boot Starter Actuator to the project's Maven or Gradle configuration file.You can add it to the Maven configuration file in the following way: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> Or add to the Gradle configuration file through the following way: groovy implementation 'org.springframework.boot:spring-boot-starter-actuator' 2. Configuration endpoint exposure: Actuator provides many built -in endpoints, such as `/health`,`/info`, `/metrics`, etc.By default, these endpoints are only exposed to the endpoints of `/health`, and other endpoints are closed. If other endpoints need to be exposed, configuration can be configured in the application configuration file (such as Application.properties or Application.yml).For example, to expose the endpoint of `/info` and`/metrics`, you can add the following configuration to the configuration file: yaml management: endpoints: web: exposure: include: info,metrics In this way, you can access `/info` and`/metrics` endpoints through the following URL: - http://localhost:8080/actuator/info - http://localhost:8080/actuator/metrics Please note that according to actual needs, you can selectively expose the need for endpoints. 3. Custom endpoint: In addition to the built -in endpoint provided by Actualor, you can also customize your own endpoint.Custom endpoints can provide monitoring information related to application business logic. To create a custom endpoint, you can implement the `Endpoint` interface, and add the`@endpoint` annotation to this class.Next, implement the corresponding endpoint method according to your own needs.The following is a simple example: @Endpoint(id = "custom") public class CustomEndpoint { @ReadOperation public String customEndpoint() { // Return to monitoring information according to your own needs return "Custom endpoint"; } } In this way, a custom endpoint of "Custom" is created.You can access this custom endpoint through the following URL: http:// localhost: 8080/actuator/custom 4. Safety configuration: The endpoint exposure of the Actuator is protected by default. If the Spring Security is added to the project, some configurations need to be performed to access these endpoints. The following is a simple configuration example that allows all users to access all endpoints: @Configuration public class ActuatorSecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity httpSecurity) throws Exception { httpSecurity.authorizeRequests() .antMatchers("/actuator/**").permitAll() .anyRequest().authenticated() .and() .httpBasic(); } } The above configuration allows all users to access the path starting with the `/actuator` and require basic authentication. 5. Customization of monitoring information: Actuator provides rich monitoring information and can be customized through configuration.For example, you can open or close certain monitoring indicators by configuration, or provide customized data for certain indicators. The following example shows how to configure the default `` ENV` endpoint: yaml management: endpoints: web: exposure: exclude: env Through this configuration, you can close the endpoint of `/env`. Through the above best practice, we can make full use of the Spring Boot Starter Actuator to monitor and manage our applications, so as to better eliminate failure, performance tuning and operation and maintenance management.