Health Check
Noun · Development
Definitions
An endpoint (typically /health or /healthz) that reports whether a service is running and ready to accept traffic. Used by load balancers, orchestrators, and monitoring systems to detect failures and route traffic away from unhealthy instances.
In plain English: A simple check that asks a service 'are you alive and working?' so the system knows to reroute traffic if it's not.
Example: "The load balancer hits /health every 10 seconds — if two checks fail, it pulls the instance from the pool."