cookie
Parameters
value
Use the value of a cookie in the request as an aggregate key. Each distinct value in the cookie contributes to the aggregation instance. If you use a single cookie as your custom key, then each value fully defines an aggregation instance.
Parameters
argument
Use the value of a cookie in the request as an aggregate key. Each distinct value in the cookie contributes to the aggregation instance. If you use a single cookie as your custom key, then each value fully defines an aggregation instance.