APISIX has a health check mechanism which proactively checks the health status of the upstream nodes in your system. Also, APISIX integrates with Prometheus through its plugin that exposes upstream nodes (multiple instances of a backend API service that APISIX manages) health check metrics on the Prometheus metrics endpoint typically, on URL path /apisix/prometheus/metrics.
In this article, we'll guide you on how to enable and monitor API health checks using APISIX and Prometheus.