RUM-integrated End-to-End Tracing: Breaking the Mobile Observability Black Hole

This article introduces RUM-powered end-to-end tracing that connects mobile and backend traces to break the mobile observability black hole. 1.Background: The Mobile "Observability Black Hole" With the rapid development of microservices models, server observability has become increasingly mature. Distributed tracing systems such as Jaeger, Zipkin, and SkyWalking allow developers to clearly observe how a request enters the gateway and propagates through multiple microservices. However, when we attempt to extend this trace to the mobile client, a significant gap emerges. ● Correlation challenges: The mobile client and the server operate as silos, each with its own logging system. The client records the request initiation time and outcome, whereas the server retains the complete trace. Yet there is no reliable linkage between the two. When failures occur, engineers must manually correlate data using timestamps. This approach is inefficient, error-prone, and nearly infeasible under high co