For our product to thrive, we must measure for success, as shown in the following examples:
In the previous chapter, we introduced rules that would trigger an event to enlarge our instance pool. Now, we will dig into the components of that method to better understand why this pattern is so important in the cloud.
To demonstrate that we are accomplishing the right thing, we must identify signals that show what we are doing. These indicators are crucial to prove our hypotheses have been validated. The best indicators are a ratio of two metrics. An example could be the number of good responses divided by the total number of responses. This is a big change from traditional threshold-based metrics. In a cloud...