allow you to change what’s traced, and it even provides annotations to avoid

If cannot find the configuration you are Without this feature, you must use the span api, which has lifecycle commands that could be used incorrectly. Spring Cloud Sleuth provides Spring Boot auto-configuration for distributed tracing.

regardless of many services are touched. same way regardless of if the error came from a common instrumented library, Underneath, Spring Cloud Sleuth is a layer over a tracer library named Brave. By using sleuth, you can pinpoint causes of latency in your applications.Sleuth is written to not log too much and to not cause your production application to crash.

If a customization of producer / consumer sampling of messaging traces is required, Via the integration with Brave, Spring Cloud Sleuth supports Sometimes you need to use multiple implementations of the Asynchronous Rest Template.

Some applications need to sample based on the type or annotations of a java method.Most users use a framework interceptor to automate this sort of policy.

Often, eve… It also includes libraries to propagate the trace context over network boundaries (for example, with HTTP headers).The following example setup sends trace data (spans) to Zipkin over HTTP (as opposed to Kafka):The tracer creates and joins spans that model the latency of potentially distributed work. Without this feature, you must use the span api, which has lifecycle commands that could be used incorrectly. In order to get this to work, every tracing system needs to have a If you want to use only Spring Cloud Sleuth without the Zipkin integration, add the The following example shows how to add Sleuth with Maven:The following example shows how to add Sleuth with Gradle:Brave is a distributed tracing instrumentation library. If you have web, rabbit, activemq or kafka together on the classpath, you might need to pick the means by which you would like to send spans to zipkin.

To do so, set If, however, you would like to control the full process of creating the That way, you ensure that a new span is created and closed for each execution.If you have Spring Cloud CircuitBreaker on the classpath, we will wrap the passed command You can define a list of regular expressions for thread names for which you do not want spans to be created.

For example, you may be in an Amazon Web Services environment but not be reporting data to X-Ray. the If you want to add the baggage entries as tags, to make it possible to search for spans via the baggage entries, you can set the value of In this case, the value of the annotated method’s parameter runtime value becomes the value of the tag. Sampling is a way to prevent overloading the system, by consistently tracing some, but They use libraries or frameworks rather than employ Brave on their behalf.This module includes a tracer that creates and joins spans that model the latency of potentially distributed work.

(sampling), if remote fields (baggage) are sent, and which libraries are traced.

This doesn’t start new traces for requests to the health check service. Sleuth also adds annotation based tracing features and some instrumentation not The following example shows how that might work internally:Sampling only applies to tracing backends, such as Zipkin. In Brave, whenever you call Picking a span name is not a trivial task.

To disable the filter that logs uncaught exceptions you can disable the message. situation might be as follows:You might want to start a new span and provide an explicit parent of that span. You can do so by implementing a In Sleuth, we generate spans with a fixed name. You can disable this behavior by setting the value of The span is tagged with the method’s class name and method name.The following example shows how to pass tracing information with Sometimes, you need to set up a custom instance of the Features from this section can be disabled by setting the If you want to customize the way tracing context is read from and written to message headers, Once you create a span, you must stop it at some point in the future.Each color of a note signifies a span (there are seven spans - from The following image shows how parent-child relationships of spans look:The following sections refer to the example shown in the preceding image.This example has seven spans. trace contexts.Trace data, also called spans, are typically reported to Traces connect from service to service using header propagation. However, most services accepting Without distributed tracing, it can be difficult to understand the impact of a After starting a span, you can annotate events of interest or add tags containing details or lookup keys.Spans have a context that includes trace identifiers that place the span at the correct spot in the tree representing the distributed operation.When tracing code that never leaves your process, run it inside a scoped span.When you need more features, or finer control, use the Both of the above examples report the exact same span on finish!In the above example, the span will be either a new root span or the

For example, for a servlet web application, we use a You can customize the keys used in span tags. In this case, the value of the annotated method’s parameter runtime value becomes the value of the tag.