Module health 

The axum side-server (PRD §11): liveness, readiness, and metrics on a separate port from a binary’s main surface.

Structs

Health

Shared readiness flag, flipped on once the process is wired up and flipped off as shutdown begins.

Functions

serve

Serve the side-server until shutdown is cancelled, binding addr here.

serve_on

Serve the side-server on an already-bound listener until shutdown is cancelled. Binding is the caller’s job, so readiness can be flipped on only once the socket actually exists.