Hands-On Software Engineering with Golang

Stepping through a distributed tracing example

To understand how distributed tracing works, let's build a small demo application that simulates a system for collecting price quotes for a particular SKU from a variety of vendors. You can find the full source code for this demo in the Chapter11/tracing folder of this book's GitHub repository.

Our system will feature three types of services, all of which will be built on top of gRPC:

• The provider service returns price quotes for a single vendor. For our example scenario, we will be spinning up multiple provider instances to simulate different vendor systems.
• An aggregator service that sends incoming queries to a list of downstream services (providers or other aggregators) collects the responses ...