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Java Development: How to Use Micrometer for Application Monitoring and Metric Collection

Sep 21, 2023 am 10:01 AM
java monitor micrometer

Java Development: How to Use Micrometer for Application Monitoring and Metric Collection

Java development: How to use Micrometer for application monitoring and indicator collection

Abstract:
Micrometer is an open source application monitoring tool that can help developers collect, Monitor and measure metric data in applications. This article will introduce how to use Micrometer to implement application monitoring and indicator collection, and provide specific code examples.

1. Introduction to Micrometer
Micrometer is a dashboard extension library that collects metric data in Java applications. It provides a general metric collection framework that can be integrated with various monitoring systems (such as Prometheus, Graphite, InfluxDB, etc.) and tracking systems (such as Zipkin, Jaeger, etc.).

2. The core concept of Micrometer

  1. Meter: The core concept of Micrometer is a meter, which is used to measure a certain indicator in the application. Common meter types include counters, histograms, timers, etc.
  2. Meter Id: A measurement indicator consists of a meter name (name), a label (tags) and a statistical unit (unit), and is used to represent a specific measurement indicator.
  3. Meter Registry: The meter dashboard is used to register and manage metering indicators and can be integrated with a variety of monitoring systems.

3. Steps to use Micrometer for application monitoring and indicator collection
The specific steps will be introduced below to implement a simple example:

Step 1: Introduce Micrometer and Related dependencies
Add Micrometer and related monitoring system dependencies in the project's pom.xml file. For example, to integrate with Prometheus, you can add the following dependency:

<groupId>io.micrometer</groupId>
<artifactId>micrometer-core</artifactId>
<version>1.7.0</version>
Copy after login


<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-prometheus</artifactId>
<version>1.7.0</version>
Copy after login

Step 2: Configure Micrometer
In the application configuration file, configure Micrometer to integrate with the specific monitoring system. The following is an example configuration to integrate with Prometheus:

management.metrics.export.prometheus.enabled=true
management.endpoints.web.exposure.include=prometheus

Step three: Create a metering dashboard
Use Micrometer's MeterRegistry class to create a metering dashboard instance and register it. The following is an example:

MeterRegistry registry = new PrometheusMeterRegistry(PrometheusConfig.DEFAULT);
registry.config().commonTags("env", "production");
Metrics.addRegistry(registry );

Step 4: Define and use meters
Use Micrometer’s Metrics class to create and use meters. Here are some common examples of counter usage:

// Create a counter
Counter counter = registry.counter("custom_counter");

// Increment the counter
counter .increment();

//Create and use a timer
Timer timer = registry.timer("custom_timer");
Timer.Sample sample = Timer.start(registry);
// Execute a piece of code
sample.stop(timer);

4. Conclusion
By using Micrometer, we can easily collect various metrics of the application and integrate them into different monitoring systems. This article introduces the core concepts and basic usage of Micrometer, and provides a simple example. I hope this article will be helpful to Java developers in application monitoring and indicator collection.

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