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Zero to observability in a Java app: OpenTelemetry agent, Prometheus, and Grafana Tempo

September 2025 — adding real observability to a Java service without touching a line of application code

Logs tell you something happened. Metrics tell you how often. Traces tell you exactly what happened, in what order, for how long, across which services.

Sep 11, 2025 · 6 min read

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djieno.com

All Posts

Zero to observability in a Java app: OpenTelemetry agent, Prometheus, and Grafana Tempo

September 2025 — adding real observability to a Java service without touching a line of application code Logs tell you something happened. Metrics tell you how often. Traces tell you exactly what happened, in what order, for how long, across which services.

September 2025 — adding real observability to a Java service without touching a line of application code

Logs tell you something happened. Metrics tell you how often. Traces tell you exactly what happened, in what order, for how long, across which services.