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When we build a microservice architecture and the number of services keeps growing, we face the problem of debugging and tracing requests through our entire system. What happened when a user got a 500 error on his request? What service incorrectly processed his request? All these questions can be solved by the Distributed Tracing System. Let’s take Spring Cloud Sleuth as an example.

How Spring Cloud Sleuth Works

To trace a request through a distributed system, the concepts TraceID and SpanID are introduced. TraceID is generated when a request enters our system and remains unchanged throughout its path. SpanID changes as the request passes from one service to another. If necessary, it is possible to generate new spans within one service to distinguish business processes.

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Infographic.

Add Sleuth, RabbitMQ, and Zipkin in Spring Cloud Project

This article assumes that you know how to set up a spring cloud or spring boot project; also, the RabbitMQ and ElasticSearch servers are ready.

Add the dependencies in maven pom.xml:

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