Hands-On Software Engineering with Golang

The metrics store

Given that the Links 'R' Us project consists of multiple components, it would make sense for us to deploy monitoring infrastructure so that we can keep track of the health of each component. This way, we can identify components that exhibit elevated error rates or experience high load and need to be scaled up.

This is the primary role of the metrics store component. As you can see in the component diagram, all components in our design transmit metrics to the metrics collector and therefore depend on it. Of course, this is not a hard dependency: our system design should assume that the metrics collector could go offline at any given moment and make sure that none of the other components are affected should this occur in production. ...