Java Spring Cloud Sleuth: Distributed Tracing

Distributed tracing is crucial for monitoring and debugging microservices-based applications. With Java Spring Cloud Sleuth, you can easily implement distributed tracing in your Spring Boot projects.

In this tutorial, we will guide you through the steps of setting up Spring Cloud Sleuth for distributed tracing.

Step 1: Add Sleuth Dependency to your pom.xml

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

Step 2: Configure Spring Cloud Sleuth

Add the following configurations in your application.properties file:

spring.sleuth.enabled=true
spring.sleuth.sampler.probability=1.0

Step 3: Use Tracing in your Code

You can use the @NewSpan annotation to start a new span in your code. For example:

@SpringBootApplication
@RestController
public class MyController {

    private static final Logger LOGGER = LoggerFactory.getLogger(MyController.class);

    @Autowired
    private Tracer tracer;

    @GetMapping("/")
    @NewSpan
    public String hello() {
        Span currentSpan = tracer.currentSpan();
        LOGGER.info("CurrentSpan: " + currentSpan);

        return "Hello World!";
    }
}

With these simple steps, you can start implementing distributed tracing in your Java Spring applications using Spring Cloud Sleuth. Happy tracing!