Mastering Micrometer in Spring Boot: Metrics, Prometheus & Observability Explained
In this video, you’ll master *Micrometer**, the observability library that powers metrics in **Spring Boot* and modern Java applications.
✅ Understand what Micrometer is and how it works behind the scenes
✅ Learn to instrument your own code using Counters, Gauges, Timers, and Tags
✅ Integrate Micrometer with *Spring Boot Actuator*
✅ Export metrics to *Prometheus* with a clean `/actuator/prometheus` endpoint
✅ Set up Prometheus in *Docker* with a working `prometheus.yml`
✅ Query metrics using *PromQL* for real-time insights
✅ Use the `@Observed` annotation in *Spring Boot 3+* for automatic instrumentation
✅ Avoid common pitfalls like *high cardinality* and *performance overhead*
✅ Explore best practices for scalable and maintainable observability
If you're building monoliths, microservices, or distributed systems, this session gives you a full picture of how to integrate, export, and analyze your application's health and behavior using Micrometer and Prometheus.
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⏱️ *Timestamps*
00:00 – Intro
01:12 – What is Micrometer?
04:30 – Core Concepts: Meter, Registry, Tags, Observations
07:14 – Using Micrometer in Plain Java Applications
10:12 - Other Micrometer Export Options
11:16 – Spring Boot Actuator + Micrometer
13:57 – Exposing Metrics to Prometheus
14:50 – Use of Prometheus
18:31 – Common Patterns in Micrometer
19:40 – Patterns: Counter, Gauge, Timer, Tags
22:53 – Solving Common Challenges
27:03 – Architecture: From JVM to Dashboards
28:19 – Summary and Best Practices
30:37 – Micrometer, Prometheus, and Spring Boot in Action
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🔗 *Resources*
Micrometer: [https://micrometer.io](https://micrometer.io)
Spring Boot Actuator Docs: [https://docs.spring.io/spring-boot/do...](https://docs.spring.io/spring-boot/do...)
Prometheus: [https://prometheus.io](https://prometheus.io)
Grafana: [https://grafana.com](https://grafana.com)
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📌 *Hashtags*
#SpringBoot #Micrometer #Prometheus #Observability #DevOps #Metrics #Monitoring #Java #SpringBoot3 #Grafana #OpenTelemetry #Actuator #SpringFramework #Docker #Kubernetes #APM #Tracing #Logging #JavaDeveloper #BackendEngineering #JavaSpring #CloudNative #Telemetry #DistributedTracing #SystemDesign #PerformanceMonitoring #DevOpsTools #ServiceMonitoring #JVM #ProductionReady