6. Link tracking - Zipkin

        Link tracking (Distributed Tracing) is a technology for monitoring distributed applications. By collecting and displaying calls and interactions between different components in a distributed system, it helps developers and operations teams understand requests in the system Processes, performance bottlenecks, and exceptions.

1.Zipkin

        Zipkin is an open source distributed system link tracking tool for monitoring and tracking the process and performance of requests in distributed systems, helping developers locate problems and optimize performance, while providing an intuitive visual interface to display distributed request calls link.

1.1 Download Zipkin

Quickstart · OpenZipkinhttps://zipkin.io/pages/quickstart.html

1.2 Running Zipkin

java -jar zipkin-server-2.12.9-exec.jar

1.3 Using Zipkin

1.3.1 Configure in microservices that require link tracking

        import dependencies

<!--zipkin-->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zipkin</artifactId>
</dependency>

        Configuration in the main configuration class

spring:
  zipkin:
    base-url: http://localhost:9411
  sleuth:
    sampler:
      probability: 1     #采样率 0-1 100%该微服务的所有请求都被采样

1.3.2 Start the project Open the web page to view the data

http://localhost:9411