Have you had experience tracing end-to-end requests?

Yes, I have experience with distributed tracing. It is a method that allows tracking the path of a request through different services and components in a distributed system.

For example, using tools like Jaeger or Zipkin, you can add a unique identifier (trace ID) to each request, which is passed between services. This helps identify bottlenecks, delays, and errors.

In the frontend, I usually added headers with the trace ID to API requests and collected response time metrics, which facilitated diagnosing issues in the client-server interaction chain.