Issue Description

feature request

Describe what happened (or what feature you want)

In some situation, we want to perform flow control not only based on the statistics of 1 second. For example, as for some origin/callers, we wanna count the call times in 1 minute and block the caller if the count exceeds the threshold. Sentinel does not support this kind of statistics.

Describe what you expected to happen

Sentinel supports more statistic dimension of unit. It would be perfect if programmers can build the statistic rule by setting count parameters.

How to reproduce it (as minimally and precisely as possible)

Tell us your environment

Anything else we need to know?