Metrics Reference

Korvet exposes metrics in Prometheus format via Spring Boot Actuator.

Custom Korvet metrics (Kafka protocol operations, Redis operations, storage metrics) are not yet implemented. Only standard JVM and system metrics from Micrometer are currently available.

JVM Metrics

Standard JVM metrics from Micrometer:

Metric Description

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 Metrics

Metric Description

system.cpu.usage

System CPU usage

system.load.average.1m

System load average (1 minute)

disk.free

Free disk space

disk.total

Total disk space

Querying Metrics

Prometheus Queries

JVM memory usage:

jvm_memory_used_bytes{area="heap"}

GC pause time (p99):

histogram_quantile(0.99, jvm_gc_pause_seconds_bucket)

CPU usage:

process_cpu_usage

Next Steps