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Open Telemetry seems super complex compared to our current setup of Micrometer with Prometheus and Log4j2 with Json output.

I wonder if it's worth it to replace both metrics and logging just to take advantage of OT's tracing capability.

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A key benefit you might not be getting that OpenTelemetry (and Fluentd for logs in the interim) provides is routing. The ability to trial multiple downstream storage solutions is useful!

Both Micrometer and using log4j2 with a log collector (we're using fluent-bit) already support writing to multiple downstream endpoints though, so not a clear win for OTel.

you could also choose to feed json logs with span and trace ids through, but you'd then have to manually track the context, parent ids, propagation, etc. which OTel takes care of for you.

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