OpenTelemetry for Java Developers
Talkat JCON Europe 2023 · on Thursday, 2023-06-22· at 15:00· Cinema 9, Im Mediapark 1, 50670 Köln, Germany·
summary
A demo Java microservice setup runs locally with the OpenTelemetry Java agent sending metrics, traces and logs to an OpenTelemetry Collector that forwards metrics to Prometheus, traces to Tempo and logs to Loki. Attaching the agent yields HTTP server duration histograms with exemplars and a synthetic 20% error rate from injected exceptions. Custom metrics show via the OpenTelemetry API or Spring’s MeterRegistry; Spring Boot 3’s Observation API emits both traces and matching metrics (no agent needed, important for native builds). Code and Docker Compose are on GitHub.
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chapters (8)
- 0:00Introduction and setup
- 3:08Metrics in Spring Boot 2
- 11:44Custom metrics with API
- 16:13Spring Boot Actuator
- 22:12Distributed tracing
- 31:22Spring Boot 3 observation
- 38:47Logging configuration
- 41:53Conclusion and Q&A
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