[phrotoma]

For distributed tracing, how is deepflow able to correlate an inbound request (eg. client call) with an outbound request (eg. 3rd party API call required to service client call) without being inside the business logic?

[sharangxy]

Our paper provides some explanations: https://dl.acm.org/doi/10.1145/3603269.3604823

[phrotoma]

For the curious, the relevant section is 3.3 and the tl;dr appears to be: "heuristics".