Add actuator and micrometer

build.gradle.kts

@@ -46,6 +46,10 @@ dependencies {
     testImplementation("org.springframework.security:spring-security-test")
     implementation("net.logstash.logback:logstash-logback-encoder:7.4")
 
+    // Metrics
+    implementation("org.springframework.boot:spring-boot-starter-actuator")
+    implementation("io.micrometer:micrometer-registry-prometheus")
+
     // Database
     runtimeOnly("org.mariadb.jdbc:mariadb-java-client:3.3.3")
     runtimeOnly("org.xerial:sqlite-jdbc:3.45.2.0")

src/main/resources/application.properties

@@ -33,3 +33,8 @@ spring.jpa.hibernate.ddl-auto=none
 # https://github.com/termstandard/colors#truecolor-support-in-output-devices
 # If you want to read the logs using a script, read the json logs in `logs` folder instead.
 spring.output.ansi.enabled=always
+
+# Metrics
+management.server.port=8081
+management.endpoint.prometheus.enabled=true
+management.endpoints.web.exposure.include=prometheus