If the call to the CloudWatch APIs has different dimensions, but the same metric name, how will CloudWatch treat all the requests?
It will reject the request as there cannot be a separate dimension for a single metric.
It will group all the calls into a single call.
It will treat each unique combination of dimensions as a separate metric.
It will overwrite the previous dimension data with the new dimension data.
Explanations:
CloudWatch allows different dimensions for a single metric; it does not reject such requests.
CloudWatch does not group calls into a single call; each combination of dimensions is treated separately.
CloudWatch treats each unique combination of dimensions as a separate metric, allowing metrics to be differentiated by their dimensions.
CloudWatch does not overwrite previous data; it stores each unique combination of dimensions as a separate data point.
I gauge that the answer is:
It will treat each unique combination of dimensions as a separate metric.