What is the Endpoint of Spring Boot Actuator
In our daily life, we often use a variety of applications. These applications may be our mobile applications, our computer software, or the various services we use on the web. But, have you ever wondered how these applications work? How do they remain stable? If a problem occurs, how do we find out the cause of the problem?
This is the problem that Spring Boot Actuator's Endpoint solves. Spring Boot Actuator is a sub-project of Spring Boot that provides a simple way to monitor and manage our applications. Endpoint is an interface provided by Actuator. We can obtain various information about the application through this interface, such as the health status of the application, the performance data of the application, the log information of the application, etc.
Common Endpoints of Spring Boot Actuator
Spring Boot Actuator provides many Endpoints. Let's take a look at some of the common Endpoints.
/health
Spring Boot Actuator's/health endpoint is a very important function, which provides application health information. This endpoint can display various health metrics for the application, including the status of disk space, database connections, message queues, and more. By default, only status information will be displayed to prevent the leakage of sensitive information. However, we can display detailed health information by configuring propertiesmanagement.endpoint.health.show-details.
/healthThe return information of the endpoint is a JSON object, containing a status field and a details field. The status field represents the overall health status of the application. Possible values are UP (healthy), DOWN (unhealthy), (unhealthy), a> field contains detailed information on each health indicator. (unknown status), etc. The OUT_OF_SERVICE (service unavailable), UNKNOWNdetails
Through/health the endpoint, we can quickly understand the health status of the application, which is very helpful for monitoring and maintaining the application. At the same time, this endpoint can also be used by external systems (such as load balancers or container orchestration systems) to check the health of the application to decide whether to route traffic to the application.
/metrics
The /metrics Endpoint provides application performance data. Through this Endpoint, we can know various performance indicators of the application, such as request response time, memory usage, CPU usage, etc. This data is very important for us to optimize the performance of the application and improve the stability of the application.
/loggers
The /loggers Endpoint provides application log information. Through this Endpoint, we can view the application logs and find out problems during application operation. For example, we can use /loggers to check whether there are errors in the application, which part of the application has the problem, what is the cause of the problem, etc.
/info
Spring Boot Actuator's/info endpoint is an endpoint used to obtain application information. This endpoint is enabled by default and can provide meta-information about various applications, such as version number, Git commit information, build information, etc. This information can be customized through configuration files.
By default, the /info endpoint may not display any information. However, if you add some specific plugins to the build configuration, such as spring-boot-starter-actuator, then you can display some additional information on the /info endpoint. For example, if spring-boot-starter-actuator is enabled in a Maven or Gradle build file, then the /info endpoint will display the following information: the version number of the application, the description of the application, Git Branch and commit id, etc.
Also, we can customize by adding attributes in application.properties or application.yml files The output of the properties to display the name and version of the application. and endpoint. For example, we can add the info.*/infoinfo.app.nameinfo.app.version
In general, the Spring Boot Actuator's/info endpoint provides a simple and effective way to obtain and display the meta-information of the application, which is useful for monitoring and managing Spring Boot applications. very useful.
/beans
The /beans Endpoint provides Spring Beans information for the application. Through this Endpoint, we can know all Spring Beans in the application, as well as the properties, methods, dependencies, etc. of these Beans. This information is very helpful for us to understand the internal structure of the application and optimize the structure of the application.
/heapdump
The /heapdump Endpoint provides the heap memory information of the application. Through this Endpoint, we can know the application's heap memory usage and find out the application's memory leak problem. For example, we can use /heapdump to check the application's heap memory usage, find out the application's memory leaks, and optimize the application's memory usage.
/threaddump
The /threaddump Endpoint provides thread information for the application. Through this Endpoint, we can know the status of the application's threads and find out the application's thread problems. For example, we can use /threaddump to check the status of the application's threads, find out the application's thread blocking problems, and optimize the application's thread usage.
Summarize
Spring Boot Actuator's Endpoint provides a simple way to monitor and manage our applications. Through these Endpoints, we can obtain various information about the application, identify application problems, and optimize the performance and stability of the application. Whether you are a developer or an operation and maintenance personnel, you should learn and use Spring Boot Actuator's Endpoint, which will be of great help to your work.