This is a simple metric service that exports the following to the "/metrics" endpoint:
- counter.zipkin_collector.messages.$transport - cumulative messages received; should
relate to messages reported by instrumented apps
- counter.zipkin_collector.messages_dropped.$transport - cumulative messages dropped;
reasons include client disconnects or malformed content
- counter.zipkin_collector.bytes.$transport - cumulative message bytes
- counter.zipkin_collector.spans.$transport - cumulative spans read; should relate to
messages reported by instrumented apps
- counter.zipkin_collector.spans_dropped.$transport - cumulative spans dropped; reasons
include sampling or storage failures
- gauge.zipkin_collector.message_spans.$transport - last count of spans in a message
- gauge.zipkin_collector.message_bytes.$transport - last count of bytes in a message
See https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-metrics.html