SigNoz is an open-source APM. It helps developers monitor their applications & troubleshoot problems, an open-source alternative to DataDog, NewRelic, etc.

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&gt; one quick quest that how to make this “ServiceMap module” enable to show my application’s calling link in “Service Map” module
Do they have a link in the request call chain? If so, it should show up on the map.

do you mean the call chain had to been shown on Traces UI and beyond one node ？

just like above, i can find trace of my api call chain on traces UI, but i cannot find the map on Service Map UI.

Single services are not shown on service map. Only services which interact with other services will shown on service map.

ok，whether the other service must be config by openTelemetry method?

Yes, if all your services are instrumented by OpenTelemetry, they will be connected automatically.