When response times spike or a request fails deep in a distributed system, guessing is expensive. OpenTelemetry gives you a vendor-neutral way to collect traces, metrics, and logs so you can see where time is spent and what broke.
In this post, we’ll wire OpenTelemetry into a Java application: dependencies, manual SDK setup, wrapping work in spans, and exporting data so bottlenecks show up before users do.
The code for this post can be found: gjong/open-telemetry-demo
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