Spring Boot Prometheus

Definition of Spring Boot Prometheus

Spring boot provides the different types of inbuilt endpoints to the user, in which Prometheus is one of the endpoints that is provided by the spring boot. Basically, spring boot executes some different types of API for checking and monitoring the performance of the application as per the requirement or we can say that as per the document. Normally Prometheus is an open-source system and it is used to monitor the system with the help of an actuator. It consists of different parameters such as data scraper, tome series, and user interface. With the help of all these parameters, we can easily implement the spring Prometheus as per the user requirement.

What is spring boot Prometheus?

Prometheus is a free programming application utilized for occasion observing and alarming. It records constant measurements in a period series data set (taking into consideration high dimensionality) constructed utilizing an HTTP pull model, with adaptable inquiries and continuous cautioning.

Now let’s see some important key points of Prometheus as follows.

• Data Storage:

Prometheus information is put away as measurements, with every measurement having a name that is utilized for referring to and questioning it. Every measurement can be bored somewhere around a self-assertive number of key=value sets (names). Marks can remember data for the information source (which server the information is coming from) and other application-explicit breakdown data, for example, the HTTP status code (for measurements identified with HTTP reactions), question technique (GET versus POST), endpoint, and so forth The capacity to determine a self-assertive rundown of names and to inquiry dependent on these continuously is the reason Prometheus’ information model is called multi-dimensional

• Collection of Data:

Prometheus gathers information as time series. The time series are worked through a force model: The Prometheus server inquiries a rundown of information sources (now and then called exporters) at a particular surveying recurrence. Every one of the information sources serves the current upsides of the measurements for that information source at the endpoint questioned by Prometheus. The Prometheus server then, at that point, totals information across the information sources. Prometheus has various instruments to naturally find assets that it ought to use as information sources.

• Monitoring:

Arrangement for cautions can be indicated in Prometheus that determines a condition that should be kept up with for a particular span all together for an alarm to trigger. At the point when alarms trigger, they are sent to Alertmanager administration. Alertmanager can incorporate rationale to quiet cautions and furthermore to advance them to email, Slack, or notice administrations like PagerDuty. Other information frameworks like Microsoft Teams could be designed utilizing the Alertmanager Webhook Receiver as an instrument for outside mixes. Likewise, Prometheus Alerts can be utilized to get cautions straightforwardly on android gadgets even without the necessity of any objective arrangement in Alert Manager.

• Interoperability

Prometheus favors white-box checking. Applications are urged to distribute (send out) inside measurements to be gathered intermittently by Prometheus. A few exporters and specialists for different applications are accessible to give measurements. Prometheus upholds some checking and organization conventions to permit interoperability for progressing: Graphite, StatsD, SNMP, JMX, and CollectD.

Prometheus centers on the accessibility of the stage and essential tasks. The measurements are commonly put away for quite a long time. For long-haul stockpiling, the measurements can be spilled to far-off capacity arrangements.

Prometheus is an open-source observing framework that was initially worked on by SoundCloud. It comprises of the accompanying center parts –

• An information scrubber that pulls measurements information over HTTP occasionally at a designed span.
• A period series information base to store every one of the measurements information.
• A basic UI where you can envision, question, and screen every one of the measurements.

Now let’s add the micrometer Prometheus registry into an application as follows.

Spring Boot utilizes Micrometer, an application measurement exterior to coordinate actuator measurements with outer checking frameworks.

It upholds a few checking frameworks like Netflix Atlas, AWS Cloudwatch, Datadog, InfluxData, SignalFx, Graphite, Wavefront, Prometheus and so forth

To incorporate actuators with Prometheus, you need to add the micrometer-vault Prometheus dependency as follows.

<!-- Micrometer Prometheus registry -->
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-prometheus</artifactId>
</dependency>

When you add the above dependency, Spring Boot will consequently design a PrometheusMeterRegistry and a CollectorRegistry to gather and product measurements information in an arrangement that can be scratched by a Prometheus server. All the application measurements information is made accessible at an actuator endpoint called/Prometheus. The Prometheus server can scratch this endpoint to get measurements information intermittently.

How to using spring boot Prometheus?

Now let’s see how we can use Prometheus in the spring boot application as follows.

First, we need to create the spring boot project by using online mode with maven as shown in the following screenshot as follows.

In this online tool, we need to select the required parameters that are programming language, project mode, spring boot version, and java version. Also, we need to mention the project name and group, etc,

After the above setting, we get the spring boot project in the zip file, so we need to extract that folder and import it into any programming IDE as shown in the following screenshot.

Now we have a complete structure of the spring boot project, so add the required dependencies into the POM.XML file.
In this project we required two dependencies as follows.

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-prometheus</artifactId>
</dependency>

Explanation

First dependency is used for the actuator and second is form micrometer.

Now create a java class file under the resource package and write the following code as follows.

package resources;
import resources.GetMapping;
@RestController
public class hello {
@GetMapping("/Welcome")
public String Hello() {
return "Hello Welcome";
}
}

Now clean the project and run the java application class. The final output of the java application is shown in the following screenshot.

Now let’s see in the browser what exactly we get as shown in the following screenshot as follows.

So in this, we can see all the endpoints that we want.

Conclusion

We hope from this article you learn more about the Spring Boot Prometheus. From the above article, we have taken in the essential idea of the Spring Boot Prometheus and we also see the representation and example of Spring Boot Prometheus. From this article, we learned how and when we use the Spring Boot Prometheus.

Recommended Articles

This is a guide to Spring Boot Prometheus. Here we discuss Definition, What is spring boot Prometheus, important key points of Prometheus. You may also have a look at the following articles to learn more –

1. Spring Boot cors
2. Spring Boot Properties
3. Spring Boot Logging
4. Spring Boot RestTemplate