Prometheus Exemplars: Link Your Metrics to Traces
Source: prometheus.ioadvanced
Exemplars are like footnotes for your metrics, linking a data point like a latency spike directly to a specific trace ID. This lets you jump from a 'what' on a dashboard to the 'why' in your tracing system.
Exemplars bridge the gap between metrics and tracing by attaching external references, like trace IDs, to specific metric values. Think of them as footnotes on a graph: you see a p99 latency spike and can immediately get a link to the exact trace that caused it. This is invaluable for debugging, but remember they are only samples stored in a fixed-size buffer and are disabled by default in Prometheus.
Read the original → prometheus.io
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