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The hidden gems of distributed tracing

Talkat J-Fall 2022 · on Thursday, 2022-11-03· [observability, distributed-systems]
slides:none on file

Demo code wires Helidon (frontend) and Quarkus (backend) into Jaeger via an OpenTelemetry collector, exporting span metrics to Prometheus; traces show intermittent 504s, pod restarts and cache hit counts so the faulty endpoint (/activity) and offending versions are identifiable. Uses a Trace-Debug-ID header to mark local/debug traces, compares batch span processor vs simple processing, and combines Jaeger samplers (probabilistic 0.8, rate limit 5 rps) with tail-based sampling policies in the collector to avoid oversampling while still capturing error and latency spikes.

AI-written summary · about

  1. 0:00Introduction to talk
  2. 1:07Why distributed tracing
  3. 5:01Evolution of tracing standards
  4. 7:28How tracing works in practice
  5. 10:17OpenTelemetry configuration guide
  6. 12:01Demo setup overview
  7. 17:36Analyzing application errors
  8. 20:05Debugging with custom headers
  9. 24:20Correlating traces and metrics
  10. 25:27Prometheus query and analysis
  11. 26:53Caching behavior analysis
  12. 28:18Helidon and Quarkus implementation
  13. 29:19Sampling strategies explained
  14. 30:22Tail-based sampling policies
  15. 32:48Avoiding oversampling
  16. 33:50Code and resources overview
  17. 35:03Q&A session
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