Followed steps in https://howtodoinjava.com/spring-cloud/spring-cloud-zipkin-sleuth-tutorial/

Source code is present in above link and it is setup in E:\build_complete_microservices\zipkin

Start zipkin from C:\Users\shant\Downloads>java -jar zipkin-server-2.12.9-exec.jar

Invoke service - http://localhost:8081/zipkin See results in - http://localhost:9411/zipkin

Some details about distributed tracing - from udemy course - Spring Boot Microservices with Spring Cloud Beginner to Guru

Distributed Tracing - Transactions in ms span many services/instances. provides tools to trace a transaction across services and nodes used for 2 aspects:

Used to trace request across multiple ms.

• performance monitoring across steps
• logging/ troubleshooting

Spring Cloud Sleuth - distributed tracing tool for spring cloud uses brave underneath

conceptually what happens

• headers on http requests or messages are enhanced with trace data
• logging is enhanced with trace data
• optionally trace data can be reported to zipkin

Tracing Terminology

Span - basic unit of work, typically a send and receive of a message. Trace - a set of spans for a transactions

cs/sr - client sent/server received - aka request ss/cr - server sent /client received - aka response

Usually you will get 1 trace id and multiple span ids

Trace Id - X span id - a,b,c,d,e,f..

ZipKin - to report distributed tracing metrics info can be reported to zipkin via webservices via HTTP, Kafka or rabbit it uses in memory db for dev - cassandra or elasticsearch should be used in prod Use docker or binary distribution for zipkin.

java -jar zipkin.jar http:// :9411/zipkin/

spring-cloud-starter-sleuth (starter for loggin only) spring-cloud-starter-zipkin (starter that brings slueth also)

property sping.zipkin.baseUrl is used to configure zipkin server

Loggin Output

Example : DEBUG [beer-service, kalsd234, klasdj324,true] [Appname, traceid, spanid, exportable]