The trace and span ids will now be created and can be seen in the headers.
To log this and make it useful though is one thing but there is a graphical tool which makes this very easy.
ZipkinZipkin can be configured so that all Sleuth output is sent there and it allows a view of the interactions so that the times and services called can be seen. To configure and use zipkin just add another dependency,
By default everything is logged to localhost:9411 but this can be changed by adding a property
DockerIf you are running with docker you'll need to add a zipkin image into the compose file,