Hello Emanuel,
Currently there is no external visibility into what is stored in memcache in Staging or Production. It is possible we will add this functionality in the future, but it is currently not on our roadmap. Q2 can see what keys are being used in the datacenter, but we cannot view the contents of the values or edit the values. We can delete based on the keys or delete everything under a certain extension. This works exactly like it works in the local environment via the /cache endpoint on the service.
-Trey