First Move (11~18) - Code, Learn, Build
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First Move (11~18) - Code, Learn, Build

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← Java Enterprise Development|Level 3: Enterprise Microservices, Framework Architecture & Production Engineering

24. Observability: Spring Boot Actuator, Micrometer & Prometheus Metrics

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Observability: Spring Boot Actuator, Micrometer & Prometheus Metrics

Instrument production microservices with Spring Boot Actuator endpoints (`/actuator/health`, `/actuator/metrics`), Micrometer metrics collection, and Prometheus dashboard scraping.

The Three Pillars of Observability

### Observability Pillars in Java - **Metrics (Micrometer + Prometheus)**: Numeric time-series counters, gauges, and timers tracking JVM heap, CPU, and HTTP request rates. - **Logs (SLF4J + Logback + JSON)**: Structured application event logs. - **Traces (OpenTelemetry + Zipkin/Jaeger)**: Distributed transaction correlation IDs tracking requests across microservices.
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