Intro to exemplars, which enable Grafana Tempo's distributed tracing at massive scale
Exemplars are a hot topic in observability recently, and for good reason. Similarly to how Prometheus disrupted the cost structure of storing metrics at scale beginning in 2012 and for real in 2015, and how Grafana Loki disrupted the cost structure of storing logs at scale in 2018, exemplars are doing the same to traces. To understand why, let’s look at both the history of observability in the cloud native ecosystem, and what optimizations exemplars enable.