On health checks, registries and components: Assuming I'm using something like Component, and build a service which exposes its health status via a registry, what should be the correct order of dependencies? If each component which exposes a health check registers itself on start up, I might find plenty of components get passed the registry. Is it normal, or does it point towards me doing something wrong? How would you design it?

I've only ever had the "service" itself have a health check, not the components that make up the service

Using something such as https://cljdoc.org/d/metrics-clojure-health/metrics-clojure-health/2.10.0/api/metrics.health.core

I built salutem (https://github.com/logicblocks/salutem) to help with managing health checks like these. It’s not directly integrated to component but the way we use it alongside component is to have each health checkable component implement a HealthCheckable protocol which exposes a check function. Then a Health component is injected with all HealthCheckables and wires up the check functions into the registry.