Kinds of Metrics
Not all numbers behave the same way.
Watch closely. The differences matter.
e.g. total checkout requests
e.g. connection pool - active connections
e.g. checkout latency distribution
Match each metric to its type
Chart A
Chart B
Chart C
You need to know if most requests are fast or if there are slow outliers. Which metric type?
A counter or gauge reduces many observations to a single number. A histogram preserves the shape of the data.
Choose the type that matches the question you need to answer.
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