Jaeger
Spicy — senior dev territoryCI/CD & DevOps
ELI5 — The Vibe Check
In a microservices system, a user request might touch 15 services before returning. When it's slow, which service is the culprit? Jaeger gives every request a unique trace ID and each service reports how long it spent. You get a flame graph showing where all the time went. Spoiler: it's always the database.
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Related Terms
OpenTelemetry Collector
Your app generates traces, metrics, and logs.
advancedCI/CD & DevOps
Prometheus
Prometheus scrapes your services every 15 seconds asking 'how are you?' and stores the answers (metrics) as time series.
intermediateCI/CD & DevOps
Zipkin
Zipkin is the older cousin of Jaeger — built by Twitter in 2012 when microservices were still called SOA.
advancedCI/CD & DevOps