Metrics

Mon, 01 Jan 0001 00:00:00 +0000

Overview

For the overall design of Dubbo Metrics, please refer to Observability Metrics Proposal .

The following explains the specific implementation and usage related to Dubbo Java.

Usage

To enable metric collection for the Dubbo process, you need to introduce relevant dependencies and add configurations in your project. For example, in a Spring Boot project, add the following spring-boot-starter dependency to automatically enable metric collection.

<!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-metrics-prometheus -->
<dependency>
 <groupId>org.apache.dubbo</groupId>
 <artifactId>dubbo-spring-boot-observability-starter</artifactId>
 <version>3.2.0</version>
</dependency>

For a complete example, please refer to dubbo-samples-metrics-spring-boot
For complete configuration parameters, please refer to Metrics Configuration Manual

Implementation Principle Analysis

Code Structure and Workflow

Remove the original classes related to Metrics.
Create new modules dubbo-metrics/dubbo-metrics-api, dubbo-metrics/dubbo-metrics-prometheus, with MetricsConfig as the configuration class for these modules.
Use Micrometer, representing metrics with primitive types like Long, Double, etc., and introduce Micrometer in dubbo-metrics-api, letting Micrometer convert internal metrics.

The following are the key components and data flow in the Dubbo implementation:

Mesh Manual on Apache Dubbo

Metrics

Overview

Usage

Implementation Principle Analysis

Code Structure and Workflow