The specific observability tool that helps an expert see the full path of a single user request across many different microservices and how long each service took is Distributed Tracing. Distributed Tracing is a technique used to monitor requests as they flow through a distributed system, providing visibility into the end-to-end transaction. When a user request first enters the system, a unique identifier, known as a Trace ID, is generated for that specific request. This Trace ID is then propagated, meaning it is passed along, with the request as it travels from one microservice to the next, ensuring all related operations share the same identifier. Each distinct unit of work or operation performed by a microservice in response to this requ....
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