This plugin exposes metrics in Prometheus Exposition format.
- Status codes: HTTP status codes returned by upstream services.
- Latencies Histograms: Latency as measured at Kong:
- Request: Total request latency
- Kong: Time taken for Kong to route, authenticate and run all plugins for a request
- Upstream: Time taken by the upstream to respond to the request.
- Bandwidth: Total Bandwidth (egress/ingress) flowing through Kong.
- DB reachability: Can the Kong node reach it's Database or not (Guage 0/1).
- Connections: Various NGINX connection metrics like active, reading, writing, accepted connections.