Monitoring

Korvet provides comprehensive monitoring through Spring Boot Actuator and Micrometer.

Health Checks

Korvet exposes health check endpoints:

# Overall health
curl http://localhost:8080/actuator/health

# Liveness probe (for Kubernetes)
curl http://localhost:8080/actuator/health/liveness

# Readiness probe (for Kubernetes)
curl http://localhost:8080/actuator/health/readiness

Metrics

Metrics are exposed in Prometheus format:

curl http://localhost:8080/actuator/prometheus
Custom Korvet metrics (produce/fetch/redis operations) are not yet implemented. Only standard JVM and system metrics are currently available.

Available Metrics

Standard JVM and system metrics from Micrometer:

  • jvm.memory.used: JVM memory used

  • jvm.memory.max: JVM maximum memory

  • jvm.gc.pause: Garbage collection pause time

  • jvm.threads.live: Live threads

  • process.cpu.usage: Process CPU usage

  • system.cpu.usage: System CPU usage

  • system.load.average.1m: System load average

Prometheus Configuration

Add Korvet to your Prometheus scrape config:

scrape_configs:
  - job_name: 'korvet'
    static_configs:
      - targets: ['korvet:8080']
    metrics_path: '/actuator/prometheus'

Grafana Dashboards

Create dashboards to visualize:

  • Resources: CPU usage, memory usage

  • JVM: Heap memory, GC pauses, thread count

  • System: Load average, disk space

Alerting

Set up alerts for:

  • Memory pressure: JVM heap > 80%

  • High GC activity: Frequent or long GC pauses

  • High CPU usage: Process CPU > 80%

Logging

See Logging for log-based monitoring.

Next Steps