Adding metrics to your microservices is now a non-negotiable. Luckily Spring Boot has built in capabilities for this using micrometer. Prometheus is a timeseries database that makes it easy to analyze the raw numbers streaming from your server.

I faced some trouble in exposing metrics but in the end brute-forced to this combination.

Modules

In gradle file:

spring-boot-starter-web: 2.0.0.RELEASE
spring-boot-starter-actuator: 2.0.2.RELEASE
micrometer-registry-prometheus: 1.0.1

Properties

properties.yaml:

management:
    endpoints:
        web:
            exposure:
                include: prometheus,metrics,info,health

Test

http GET http://localhost:8080/actuator/prometheus