4.1 Zipkin

1. What Is Zipkin

• A distributed tracing system open-sourced by Twitter.

2. Zipkin Architecture

• 
• Collector: the collector component processes tracing information sent from external systems and converts it into the Span format used internally by Zipkin, supporting subsequent storage, analysis, display, and other functions.
• Storage: the storage component processes tracing information received by the collector. By default the information is stored in memory; the storage strategy can be changed to use other storage components, with support for MySQL, Elasticsearch, and so on.
• Web UI: the UI component is an upper-layer application implemented on top of the API component. It provides web pages used to display call chains and system dependencies in Zipkin.
• RESTful API: the API component provides the web interface with APIs for querying data in storage.

3. Using Zipkin

3.1. Install zipkin-server

3.1.1. In-Memory Version

1. Download the jar package.

curl -sSL https://zipkin.io/quickstart.sh | bash -s
java -jar zipkin.jar

2. Open a browser and visit http://127.0.0.1:9411/

3.2. zipkin-client

• openzipkin/zipkin-go: Zipkin tracer library for go

4. References

• Microservices Series: Sleuth Distributed Tracing (1)
• Architecture · OpenZipkin
• Quickstart · OpenZipkin