I assume each service has its own health check that checks the service is accessible from an internal location, thus most are green. However, when Service A requires Service B to do work, but Service B is down, a simple access check on Service A clearly doesn't give a good representation of uptime.
So what's a good health check actually report these days? Is it just about its own status, or should it include a breakdown of the status of external dependencies as part of its folded up status?
So what's a good health check actually report these days? Is it just about its own status, or should it include a breakdown of the status of external dependencies as part of its folded up status?