Observability with Spring Boot 3

This is a sample project to demonstrate how to use Spring Boot 3 with Micrometer, Prometheus, Grafana, Loki e Tempo.

Requirements

• Java 17
• Spring Boot 3.0 or higher:
  • Spring WEB or Reactive
  • Spring Actuator
  • Spring AOP
  • Logback (or Log4j2)
• Docker/Compose

Observability Stack

• Micrometer: metrics collection library
• Tempo: distributed tracing backend
• Loki: log aggregation system
• Grafana: visualization tool for metrics, logs and traces
• Prometheus: monitoring platform that collects metrics from monitored targets by scraping metrics HTTP endpoints on these targets

Running the project

To run the project, just execute:

docker-compose up -d

This will start the following services:

$ ./mvnw spring-boot:run -pl :bff-service

$ ./mvnw spring-boot:run -pl :product-service

Testing the project

  curl --location 'http://localhost:8080/api/products'

Grafana Dashboards : http://localhost:3000/

Application log :

Tempo :

Loki :