Monitoring is a critical part of any software development process. It allows developers to identify and diagnose issues with their applications in production.
Spring Boot provides a number of built-in metrics for monitoring applications. In this post, we'll take a look at what Spring Boot metrics are and how to use them for monitoring your applications.
Spring Boot metrics are a set of tools for monitoring Spring-based applications. They provide insight into the runtime behavior of applications and can be used to identify performance bottlenecks.
Spring Boot metrics are designed to be used with a variety of monitoring tools, such as Prometheus, Graphite, and StatsD.
Spring Boot provides a number of ways to configure and use metrics. In this section, we'll take a look at a few of the most important configuration options.
Metrics are disabled by default in Spring Boot. To enable metrics, you need to add the following property to your application's application.properties file:
spring.metrics.enable=true
Spring Boot allows you to configure a number of aspects of the metrics system. For example, you can configure the default registry, the metric name prefix, and the export format.
The following property can be used to configure the default registry:
spring.metrics.default-registry=my-registry
The following property can be used to configure the metric name prefix:
spring.metrics.prefix=my-prefix
The following property can be used to configure the export format:
spring.metrics.export.format=json
Spring Boot supports a number of ways to export metrics. The most common way is to use the /metrics endpoint. This endpoint exposes metrics in the Prometheus format by default.
You can also use the /metrics/{name} endpoint to export a single metric. For example, the following endpoint would export the jvm.memory.used metric:
/metrics/jvm.memory.used
In this post, we've looked at Spring Boot metrics and how to use them for monitoring your applications. We've also seen how to enable and configure metrics, and how to export metrics for use with monitoring tools.