Too Many to Hold
The system speaks. But a thousand events pour out every second.
Too many to hold. But if you count them, a pattern appears.
The system is getting slow. Is it getting worse?
Can you tell from this stream of events?
What just happened when you clicked that button?
What you just built, a number that measures something over time, has a name. What is it called?
Metric
A metric is a measurement captured over time.
It tells you how much, how fast, how often: the vital signs of a system.
You didn't just learn what a metric is. You built one.
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