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| 1 | +--- |
| 2 | +title: Trace Propagation Cheat Sheet |
| 3 | +--- |
| 4 | + |
| 5 | +This is a cheat sheet where you can see how the trace propagation work in SDKs in different scenarios. |
| 6 | + |
| 7 | +| SCENARIO:<br/>Incoming trace in `sentry-trace/baggage` headers | SCENARIO:<br/>Incoming sampled flag in `sentry-trace/baggage` header | SCENARIO:<br/>`traces_propagation_targets` are matching? | SCENARIO:<br/>`traces_sample_rate` setting | OUTCOME:<br/>Send Spans to Sentry? | OUTCOME:<br/>Outgoing Requests Have Trace? (`sentry-trace/baggage` are present) | OUTCOME:<br/>Continue Incoming Trace? (outgoing `trace_id` is the incoming `trace_id`) | |
| 8 | +| -------------------------------------------------------------- | :------------------------------------------------------------------: | :------------------------------------------------------: | :----------------------------------------: | :--------------------------------: | :-----------------------------------------------------------------------------: | :------------------------------------------------------------------------------------: | |
| 9 | +| not present | - | yes | null | no | yes | - | |
| 10 | +| not present | - | yes | 0 | no | yes | - | |
| 11 | +| not present | - | yes | 1 | yes | yes | - | |
| 12 | +| -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | |
| 13 | +| not present | - | no | null | no | no | - | |
| 14 | +| not present | - | no | 0 | no | no | - | |
| 15 | +| not present | - | no | 1 | yes | no | - | |
| 16 | +| -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | |
| 17 | +| present | empty (deferred) | yes | null | no | yes | yes | |
| 18 | +| present | empty (deferred) | yes | 0 | no | yes | yes | |
| 19 | +| present | empty (deferred) | yes | 1 | yes | yes | yes | |
| 20 | +| -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | |
| 21 | +| present | 1 | yes | null | no | yes | yes | |
| 22 | +| present | 1 | yes | 0 | yes | yes | yes | |
| 23 | +| present | 1 | yes | 1 | yes | yes | yes | |
| 24 | +| -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | |
| 25 | +| present | 0 | yes | null | no | yes | yes | |
| 26 | +| present | 0 | yes | 0 | no | yes | yes | |
| 27 | +| present | 0 | yes | 1 | no | yes | yes | |
| 28 | +| -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | |
| 29 | +| present | empty (deferred) | no | null | no | no | - | |
| 30 | +| present | empty (deferred) | no | 0 | no | no | - | |
| 31 | +| present | empty (deferred) | no | 1 | yes | no | - | |
| 32 | +| -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | |
| 33 | +| present | 1 | no | null | no | no | - | |
| 34 | +| present | 1 | no | 0 | yes | no | - | |
| 35 | +| present | 1 | no | 1 | yes | no | - | |
| 36 | +| -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | -------------------- | |
| 37 | +| present | 0 | no | null | no | no | - | |
| 38 | +| present | 0 | no | 0 | no | no | - | |
| 39 | +| present | 0 | no | 1 | no | no | - | |
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